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jlechner |
/* Component.java -- a graphics component
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Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package java.awt;
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import java.awt.dnd.DropTarget;
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import java.awt.event.ActionEvent;
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import java.awt.event.ComponentEvent;
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import java.awt.event.ComponentListener;
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import java.awt.event.FocusEvent;
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import java.awt.event.FocusListener;
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import java.awt.event.HierarchyBoundsListener;
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import java.awt.event.HierarchyEvent;
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import java.awt.event.HierarchyListener;
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import java.awt.event.InputEvent;
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import java.awt.event.InputMethodEvent;
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import java.awt.event.InputMethodListener;
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import java.awt.event.KeyEvent;
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import java.awt.event.KeyListener;
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import java.awt.event.MouseEvent;
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import java.awt.event.MouseListener;
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import java.awt.event.MouseMotionListener;
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import java.awt.event.MouseWheelEvent;
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import java.awt.event.MouseWheelListener;
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import java.awt.event.PaintEvent;
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import java.awt.event.WindowEvent;
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import java.awt.im.InputContext;
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import java.awt.im.InputMethodRequests;
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import java.awt.image.BufferStrategy;
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import java.awt.image.ColorModel;
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import java.awt.image.ImageObserver;
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import java.awt.image.ImageProducer;
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import java.awt.image.VolatileImage;
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import java.awt.peer.ComponentPeer;
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import java.awt.peer.LightweightPeer;
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import java.beans.PropertyChangeListener;
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import java.beans.PropertyChangeSupport;
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import java.io.IOException;
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import java.io.ObjectInputStream;
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import java.io.ObjectOutputStream;
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import java.io.PrintStream;
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import java.io.PrintWriter;
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import java.io.Serializable;
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import java.lang.reflect.Array;
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import java.util.Collections;
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import java.util.EventListener;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.Locale;
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import java.util.Set;
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import java.util.Vector;
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import javax.accessibility.Accessible;
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import javax.accessibility.AccessibleComponent;
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import javax.accessibility.AccessibleContext;
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import javax.accessibility.AccessibleRole;
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import javax.accessibility.AccessibleState;
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import javax.accessibility.AccessibleStateSet;
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/**
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* The root of all evil. All graphical representations are subclasses of this
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* giant class, which is designed for screen display and user interaction.
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* This class can be extended directly to build a lightweight component (one
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* not associated with a native window); lightweight components must reside
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* inside a heavyweight window.
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*
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* <p>This class is Serializable, which has some big implications. A user can
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* save the state of all graphical components in one VM, and reload them in
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* another. Note that this class will only save Serializable listeners, and
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* ignore the rest, without causing any serialization exceptions. However, by
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* making a listener serializable, and adding it to another element, you link
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* in that entire element to the state of this component. To get around this,
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* use the idiom shown in the example below - make listeners non-serializable
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* in inner classes, rather than using this object itself as the listener, if
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* external objects do not need to save the state of this object.
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*
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* <pre>
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* import java.awt.*;
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* import java.awt.event.*;
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* import java.io.Serializable;
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* class MyApp implements Serializable
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* {
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* BigObjectThatShouldNotBeSerializedWithAButton bigOne;
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* // Serializing aButton will not suck in an instance of MyApp, with its
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* // accompanying field bigOne.
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* Button aButton = new Button();
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* class MyActionListener implements ActionListener
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* {
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* public void actionPerformed(ActionEvent e)
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* {
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* System.out.println("Hello There");
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* }
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* }
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* MyApp()
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* {
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* aButton.addActionListener(new MyActionListener());
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* }
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* }
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* </pre>
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*
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* <p>Status: Incomplete. The event dispatch mechanism is implemented. All
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* other methods defined in the J2SE 1.3 API javadoc exist, but are mostly
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* incomplete or only stubs; except for methods relating to the Drag and
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* Drop, Input Method, and Accessibility frameworks: These methods are
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* present but commented out.
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*
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* @author original author unknown
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* @author Eric Blake (ebb9@email.byu.edu)
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* @since 1.0
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* @status still missing 1.4 support
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*/
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public abstract class Component
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implements ImageObserver, MenuContainer, Serializable
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{
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// Word to the wise - this file is huge. Search for '\f' (^L) for logical
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// sectioning by fields, public API, private API, and nested classes.
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/**
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* Compatible with JDK 1.0+.
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*/
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private static final long serialVersionUID = -7644114512714619750L;
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/**
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* Constant returned by the <code>getAlignmentY</code> method to indicate
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* that the component wishes to be aligned to the top relative to
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* other components.
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*
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* @see #getAlignmentY()
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*/
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public static final float TOP_ALIGNMENT = 0;
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/**
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* Constant returned by the <code>getAlignmentY</code> and
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* <code>getAlignmentX</code> methods to indicate
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* that the component wishes to be aligned to the center relative to
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* other components.
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*
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* @see #getAlignmentX()
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* @see #getAlignmentY()
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*/
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public static final float CENTER_ALIGNMENT = 0.5f;
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/**
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* Constant returned by the <code>getAlignmentY</code> method to indicate
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* that the component wishes to be aligned to the bottom relative to
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* other components.
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*
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* @see #getAlignmentY()
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*/
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public static final float BOTTOM_ALIGNMENT = 1;
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/**
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* Constant returned by the <code>getAlignmentX</code> method to indicate
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* that the component wishes to be aligned to the right relative to
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* other components.
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*
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* @see #getAlignmentX()
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*/
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public static final float RIGHT_ALIGNMENT = 1;
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/**
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* Constant returned by the <code>getAlignmentX</code> method to indicate
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* that the component wishes to be aligned to the left relative to
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* other components.
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*
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* @see #getAlignmentX()
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*/
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public static final float LEFT_ALIGNMENT = 0;
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/**
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* Make the treelock a String so that it can easily be identified
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* in debug dumps. We clone the String in order to avoid a conflict in
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* the unlikely event that some other package uses exactly the same string
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* as a lock object.
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*/
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static final Object treeLock = new String("AWT_TREE_LOCK");
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// Serialized fields from the serialization spec.
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/**
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* The x position of the component in the parent's coordinate system.
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*
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* @see #getLocation()
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* @serial the x position
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*/
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int x;
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/**
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* The y position of the component in the parent's coordinate system.
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*
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* @see #getLocation()
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* @serial the y position
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*/
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int y;
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/**
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* The component width.
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*
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* @see #getSize()
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* @serial the width
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*/
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int width;
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/**
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* The component height.
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*
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* @see #getSize()
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* @serial the height
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*/
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int height;
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/**
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* The foreground color for the component. This may be null.
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*
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* @see #getForeground()
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* @see #setForeground(Color)
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* @serial the foreground color
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*/
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Color foreground;
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/**
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* The background color for the component. This may be null.
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*
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* @see #getBackground()
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* @see #setBackground(Color)
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* @serial the background color
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*/
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Color background;
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/**
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* The default font used in the component. This may be null.
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*
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* @see #getFont()
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* @see #setFont(Font)
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* @serial the font
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*/
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Font font;
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/**
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* The font in use by the peer, or null if there is no peer.
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*
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* @serial the peer's font
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*/
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Font peerFont;
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/**
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* The cursor displayed when the pointer is over this component. This may
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* be null.
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*
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* @see #getCursor()
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* @see #setCursor(Cursor)
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*/
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Cursor cursor;
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/**
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* The locale for the component.
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*
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* @see #getLocale()
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* @see #setLocale(Locale)
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*/
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Locale locale = Locale.getDefault ();
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/**
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* True if the object should ignore repaint events (usually because it is
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* not showing).
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*
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* @see #getIgnoreRepaint()
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* @see #setIgnoreRepaint(boolean)
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* @serial true to ignore repaints
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* @since 1.4
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*/
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boolean ignoreRepaint;
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/**
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* True when the object is visible (although it is only showing if all
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* ancestors are likewise visible). For component, this defaults to true.
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*
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* @see #isVisible()
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* @see #setVisible(boolean)
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* @serial true if visible
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*/
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boolean visible = true;
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/**
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* True if the object is enabled, meaning it can interact with the user.
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* For component, this defaults to true.
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*
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* @see #isEnabled()
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* @see #setEnabled(boolean)
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* @serial true if enabled
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*/
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boolean enabled = true;
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/**
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* True if the object is valid. This is set to false any time a size
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* adjustment means the component need to be layed out again.
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*
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* @see #isValid()
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* @see #validate()
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* @see #invalidate()
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* @serial true if layout is valid
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*/
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boolean valid;
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/**
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* The DropTarget for drag-and-drop operations.
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*
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* @see #getDropTarget()
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* @see #setDropTarget(DropTarget)
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* @serial the drop target, or null
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* @since 1.2
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*/
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DropTarget dropTarget;
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/**
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* The list of popup menus for this component.
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*
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* @see #add(PopupMenu)
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* @serial the list of popups
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*/
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Vector popups;
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/**
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* The component's name. May be null, in which case a default name is
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* generated on the first use.
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*
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* @see #getName()
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* @see #setName(String)
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* @serial the name
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*/
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String name;
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/**
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* True once the user has set the name. Note that the user may set the name
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* to null.
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*
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* @see #name
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* @see #getName()
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* @see #setName(String)
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* @serial true if the name has been explicitly set
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*/
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|
|
boolean nameExplicitlySet;
|
379 |
|
|
|
380 |
|
|
/**
|
381 |
|
|
* Indicates if the object can be focused. Defaults to true for components.
|
382 |
|
|
*
|
383 |
|
|
* @see #isFocusable()
|
384 |
|
|
* @see #setFocusable(boolean)
|
385 |
|
|
* @since 1.4
|
386 |
|
|
*/
|
387 |
|
|
boolean focusable = true;
|
388 |
|
|
|
389 |
|
|
/**
|
390 |
|
|
* Tracks whether this component's {@link #isFocusTraversable}
|
391 |
|
|
* method has been overridden.
|
392 |
|
|
*
|
393 |
|
|
* @since 1.4
|
394 |
|
|
*/
|
395 |
|
|
int isFocusTraversableOverridden;
|
396 |
|
|
|
397 |
|
|
/**
|
398 |
|
|
* The focus traversal keys, if not inherited from the parent or
|
399 |
|
|
* default keyboard focus manager. These sets will contain only
|
400 |
|
|
* AWTKeyStrokes that represent press and release events to use as
|
401 |
|
|
* focus control.
|
402 |
|
|
*
|
403 |
|
|
* @see #getFocusTraversalKeys(int)
|
404 |
|
|
* @see #setFocusTraversalKeys(int, Set)
|
405 |
|
|
* @since 1.4
|
406 |
|
|
*/
|
407 |
|
|
Set[] focusTraversalKeys;
|
408 |
|
|
|
409 |
|
|
/**
|
410 |
|
|
* True if focus traversal keys are enabled. This defaults to true for
|
411 |
|
|
* Component. If this is true, keystrokes in focusTraversalKeys are trapped
|
412 |
|
|
* and processed automatically rather than being passed on to the component.
|
413 |
|
|
*
|
414 |
|
|
* @see #getFocusTraversalKeysEnabled()
|
415 |
|
|
* @see #setFocusTraversalKeysEnabled(boolean)
|
416 |
|
|
* @since 1.4
|
417 |
|
|
*/
|
418 |
|
|
boolean focusTraversalKeysEnabled = true;
|
419 |
|
|
|
420 |
|
|
/**
|
421 |
|
|
* Cached information on the minimum size. Should have been transient.
|
422 |
|
|
*
|
423 |
|
|
* @serial ignore
|
424 |
|
|
*/
|
425 |
|
|
Dimension minSize;
|
426 |
|
|
|
427 |
|
|
/**
|
428 |
|
|
* Cached information on the preferred size. Should have been transient.
|
429 |
|
|
*
|
430 |
|
|
* @serial ignore
|
431 |
|
|
*/
|
432 |
|
|
Dimension prefSize;
|
433 |
|
|
|
434 |
|
|
/**
|
435 |
|
|
* Set to true if an event is to be handled by this component, false if
|
436 |
|
|
* it is to be passed up the hierarcy.
|
437 |
|
|
*
|
438 |
|
|
* @see #dispatchEvent(AWTEvent)
|
439 |
|
|
* @serial true to process event locally
|
440 |
|
|
*/
|
441 |
|
|
boolean newEventsOnly;
|
442 |
|
|
|
443 |
|
|
/**
|
444 |
|
|
* Set by subclasses to enable event handling of particular events, and
|
445 |
|
|
* left alone when modifying listeners. For component, this defaults to
|
446 |
|
|
* enabling only input methods.
|
447 |
|
|
*
|
448 |
|
|
* @see #enableInputMethods(boolean)
|
449 |
|
|
* @see AWTEvent
|
450 |
|
|
* @serial the mask of events to process
|
451 |
|
|
*/
|
452 |
|
|
long eventMask = AWTEvent.INPUT_ENABLED_EVENT_MASK;
|
453 |
|
|
|
454 |
|
|
/**
|
455 |
|
|
* Describes all registered PropertyChangeListeners.
|
456 |
|
|
*
|
457 |
|
|
* @see #addPropertyChangeListener(PropertyChangeListener)
|
458 |
|
|
* @see #removePropertyChangeListener(PropertyChangeListener)
|
459 |
|
|
* @see #firePropertyChange(String, Object, Object)
|
460 |
|
|
* @serial the property change listeners
|
461 |
|
|
* @since 1.2
|
462 |
|
|
*/
|
463 |
|
|
PropertyChangeSupport changeSupport;
|
464 |
|
|
|
465 |
|
|
/**
|
466 |
|
|
* True if the component has been packed (layed out).
|
467 |
|
|
*
|
468 |
|
|
* @serial true if this is packed
|
469 |
|
|
*/
|
470 |
|
|
boolean isPacked;
|
471 |
|
|
|
472 |
|
|
/**
|
473 |
|
|
* The serialization version for this class. Currently at version 4.
|
474 |
|
|
*
|
475 |
|
|
* XXX How do we handle prior versions?
|
476 |
|
|
*
|
477 |
|
|
* @serial the serialization version
|
478 |
|
|
*/
|
479 |
|
|
int componentSerializedDataVersion = 4;
|
480 |
|
|
|
481 |
|
|
/**
|
482 |
|
|
* The accessible context associated with this component. This is only set
|
483 |
|
|
* by subclasses.
|
484 |
|
|
*
|
485 |
|
|
* @see #getAccessibleContext()
|
486 |
|
|
* @serial the accessibility context
|
487 |
|
|
* @since 1.2
|
488 |
|
|
*/
|
489 |
|
|
AccessibleContext accessibleContext;
|
490 |
|
|
|
491 |
|
|
|
492 |
|
|
// Guess what - listeners are special cased in serialization. See
|
493 |
|
|
// readObject and writeObject.
|
494 |
|
|
|
495 |
|
|
/** Component listener chain. */
|
496 |
|
|
transient ComponentListener componentListener;
|
497 |
|
|
|
498 |
|
|
/** Focus listener chain. */
|
499 |
|
|
transient FocusListener focusListener;
|
500 |
|
|
|
501 |
|
|
/** Key listener chain. */
|
502 |
|
|
transient KeyListener keyListener;
|
503 |
|
|
|
504 |
|
|
/** Mouse listener chain. */
|
505 |
|
|
transient MouseListener mouseListener;
|
506 |
|
|
|
507 |
|
|
/** Mouse motion listener chain. */
|
508 |
|
|
transient MouseMotionListener mouseMotionListener;
|
509 |
|
|
|
510 |
|
|
/**
|
511 |
|
|
* Mouse wheel listener chain.
|
512 |
|
|
*
|
513 |
|
|
* @since 1.4
|
514 |
|
|
*/
|
515 |
|
|
transient MouseWheelListener mouseWheelListener;
|
516 |
|
|
|
517 |
|
|
/**
|
518 |
|
|
* Input method listener chain.
|
519 |
|
|
*
|
520 |
|
|
* @since 1.2
|
521 |
|
|
*/
|
522 |
|
|
transient InputMethodListener inputMethodListener;
|
523 |
|
|
|
524 |
|
|
/**
|
525 |
|
|
* Hierarcy listener chain.
|
526 |
|
|
*
|
527 |
|
|
* @since 1.3
|
528 |
|
|
*/
|
529 |
|
|
transient HierarchyListener hierarchyListener;
|
530 |
|
|
|
531 |
|
|
/**
|
532 |
|
|
* Hierarcy bounds listener chain.
|
533 |
|
|
*
|
534 |
|
|
* @since 1.3
|
535 |
|
|
*/
|
536 |
|
|
transient HierarchyBoundsListener hierarchyBoundsListener;
|
537 |
|
|
|
538 |
|
|
// Anything else is non-serializable, and should be declared "transient".
|
539 |
|
|
|
540 |
|
|
/** The parent. */
|
541 |
|
|
transient Container parent;
|
542 |
|
|
|
543 |
|
|
/** The associated native peer. */
|
544 |
|
|
transient ComponentPeer peer;
|
545 |
|
|
|
546 |
|
|
/** The preferred component orientation. */
|
547 |
|
|
transient ComponentOrientation orientation = ComponentOrientation.UNKNOWN;
|
548 |
|
|
|
549 |
|
|
/**
|
550 |
|
|
* The associated graphics configuration.
|
551 |
|
|
*
|
552 |
|
|
* @since 1.4
|
553 |
|
|
*/
|
554 |
|
|
transient GraphicsConfiguration graphicsConfig;
|
555 |
|
|
|
556 |
|
|
/**
|
557 |
|
|
* The buffer strategy for repainting.
|
558 |
|
|
*
|
559 |
|
|
* @since 1.4
|
560 |
|
|
*/
|
561 |
|
|
transient BufferStrategy bufferStrategy;
|
562 |
|
|
|
563 |
|
|
/**
|
564 |
|
|
* true if requestFocus was called on this component when its
|
565 |
|
|
* top-level ancestor was not focusable.
|
566 |
|
|
*/
|
567 |
|
|
private transient FocusEvent pendingFocusRequest = null;
|
568 |
|
|
|
569 |
|
|
/**
|
570 |
|
|
* The system properties that affect image updating.
|
571 |
|
|
*/
|
572 |
|
|
private static transient boolean incrementalDraw;
|
573 |
|
|
private static transient Long redrawRate;
|
574 |
|
|
|
575 |
|
|
static
|
576 |
|
|
{
|
577 |
|
|
incrementalDraw = Boolean.getBoolean ("awt.image.incrementalDraw");
|
578 |
|
|
redrawRate = Long.getLong ("awt.image.redrawrate");
|
579 |
|
|
}
|
580 |
|
|
|
581 |
|
|
// Public and protected API.
|
582 |
|
|
|
583 |
|
|
/**
|
584 |
|
|
* Default constructor for subclasses. When Component is extended directly,
|
585 |
|
|
* it forms a lightweight component that must be hosted in an opaque native
|
586 |
|
|
* container higher in the tree.
|
587 |
|
|
*/
|
588 |
|
|
protected Component()
|
589 |
|
|
{
|
590 |
|
|
// Nothing to do here.
|
591 |
|
|
}
|
592 |
|
|
|
593 |
|
|
/**
|
594 |
|
|
* Returns the name of this component.
|
595 |
|
|
*
|
596 |
|
|
* @return the name of this component
|
597 |
|
|
* @see #setName(String)
|
598 |
|
|
* @since 1.1
|
599 |
|
|
*/
|
600 |
|
|
public String getName()
|
601 |
|
|
{
|
602 |
|
|
if (name == null && ! nameExplicitlySet)
|
603 |
|
|
name = generateName();
|
604 |
|
|
return name;
|
605 |
|
|
}
|
606 |
|
|
|
607 |
|
|
/**
|
608 |
|
|
* Sets the name of this component to the specified name.
|
609 |
|
|
*
|
610 |
|
|
* @param name the new name of this component
|
611 |
|
|
* @see #getName()
|
612 |
|
|
* @since 1.1
|
613 |
|
|
*/
|
614 |
|
|
public void setName(String name)
|
615 |
|
|
{
|
616 |
|
|
nameExplicitlySet = true;
|
617 |
|
|
this.name = name;
|
618 |
|
|
}
|
619 |
|
|
|
620 |
|
|
/**
|
621 |
|
|
* Returns the parent of this component.
|
622 |
|
|
*
|
623 |
|
|
* @return the parent of this component
|
624 |
|
|
*/
|
625 |
|
|
public Container getParent()
|
626 |
|
|
{
|
627 |
|
|
return parent;
|
628 |
|
|
}
|
629 |
|
|
|
630 |
|
|
/**
|
631 |
|
|
* Returns the native windowing system peer for this component. Only the
|
632 |
|
|
* platform specific implementation code should call this method.
|
633 |
|
|
*
|
634 |
|
|
* @return the peer for this component
|
635 |
|
|
* @deprecated user programs should not directly manipulate peers; use
|
636 |
|
|
* {@link #isDisplayable()} instead
|
637 |
|
|
*/
|
638 |
|
|
// Classpath's Gtk peers rely on this.
|
639 |
|
|
public ComponentPeer getPeer()
|
640 |
|
|
{
|
641 |
|
|
return peer;
|
642 |
|
|
}
|
643 |
|
|
|
644 |
|
|
/**
|
645 |
|
|
* Set the associated drag-and-drop target, which receives events when this
|
646 |
|
|
* is enabled.
|
647 |
|
|
*
|
648 |
|
|
* @param dt the new drop target
|
649 |
|
|
* @see #isEnabled()
|
650 |
|
|
*/
|
651 |
|
|
public void setDropTarget(DropTarget dt)
|
652 |
|
|
{
|
653 |
|
|
this.dropTarget = dt;
|
654 |
|
|
}
|
655 |
|
|
|
656 |
|
|
/**
|
657 |
|
|
* Gets the associated drag-and-drop target, if there is one.
|
658 |
|
|
*
|
659 |
|
|
* @return the drop target
|
660 |
|
|
*/
|
661 |
|
|
public DropTarget getDropTarget()
|
662 |
|
|
{
|
663 |
|
|
return dropTarget;
|
664 |
|
|
}
|
665 |
|
|
|
666 |
|
|
/**
|
667 |
|
|
* Returns the graphics configuration of this component, if there is one.
|
668 |
|
|
* If it has not been set, it is inherited from the parent.
|
669 |
|
|
*
|
670 |
|
|
* @return the graphics configuration, or null
|
671 |
|
|
* @since 1.3
|
672 |
|
|
*/
|
673 |
|
|
public GraphicsConfiguration getGraphicsConfiguration()
|
674 |
|
|
{
|
675 |
|
|
return getGraphicsConfigurationImpl();
|
676 |
|
|
}
|
677 |
|
|
|
678 |
|
|
/**
|
679 |
|
|
* Returns the object used for synchronization locks on this component
|
680 |
|
|
* when performing tree and layout functions.
|
681 |
|
|
*
|
682 |
|
|
* @return the synchronization lock for this component
|
683 |
|
|
*/
|
684 |
|
|
public final Object getTreeLock()
|
685 |
|
|
{
|
686 |
|
|
return treeLock;
|
687 |
|
|
}
|
688 |
|
|
|
689 |
|
|
/**
|
690 |
|
|
* Returns the toolkit in use for this component. The toolkit is associated
|
691 |
|
|
* with the frame this component belongs to.
|
692 |
|
|
*
|
693 |
|
|
* @return the toolkit for this component
|
694 |
|
|
*/
|
695 |
|
|
public Toolkit getToolkit()
|
696 |
|
|
{
|
697 |
|
|
if (peer != null)
|
698 |
|
|
{
|
699 |
|
|
Toolkit tk = peer.getToolkit();
|
700 |
|
|
if (tk != null)
|
701 |
|
|
return tk;
|
702 |
|
|
}
|
703 |
|
|
// Get toolkit for lightweight component.
|
704 |
|
|
if (parent != null)
|
705 |
|
|
return parent.getToolkit();
|
706 |
|
|
return Toolkit.getDefaultToolkit();
|
707 |
|
|
}
|
708 |
|
|
|
709 |
|
|
/**
|
710 |
|
|
* Tests whether or not this component is valid. A invalid component needs
|
711 |
|
|
* to have its layout redone.
|
712 |
|
|
*
|
713 |
|
|
* @return true if this component is valid
|
714 |
|
|
* @see #validate()
|
715 |
|
|
* @see #invalidate()
|
716 |
|
|
*/
|
717 |
|
|
public boolean isValid()
|
718 |
|
|
{
|
719 |
|
|
return valid;
|
720 |
|
|
}
|
721 |
|
|
|
722 |
|
|
/**
|
723 |
|
|
* Tests if the component is displayable. It must be connected to a native
|
724 |
|
|
* screen resource. This reduces to checking that peer is not null. A
|
725 |
|
|
* containment hierarchy is made displayable when a window is packed or
|
726 |
|
|
* made visible.
|
727 |
|
|
*
|
728 |
|
|
* @return true if the component is displayable
|
729 |
|
|
* @see Container#add(Component)
|
730 |
|
|
* @see Container#remove(Component)
|
731 |
|
|
* @see Window#pack()
|
732 |
|
|
* @see Window#show()
|
733 |
|
|
* @see Window#dispose()
|
734 |
|
|
* @since 1.2
|
735 |
|
|
*/
|
736 |
|
|
public boolean isDisplayable()
|
737 |
|
|
{
|
738 |
|
|
return peer != null;
|
739 |
|
|
}
|
740 |
|
|
|
741 |
|
|
/**
|
742 |
|
|
* Tests whether or not this component is visible. Except for top-level
|
743 |
|
|
* frames, components are initially visible.
|
744 |
|
|
*
|
745 |
|
|
* @return true if the component is visible
|
746 |
|
|
* @see #setVisible(boolean)
|
747 |
|
|
*/
|
748 |
|
|
public boolean isVisible()
|
749 |
|
|
{
|
750 |
|
|
return visible;
|
751 |
|
|
}
|
752 |
|
|
|
753 |
|
|
/**
|
754 |
|
|
* Tests whether or not this component is actually being shown on
|
755 |
|
|
* the screen. This will be true if and only if it this component is
|
756 |
|
|
* visible and its parent components are all visible.
|
757 |
|
|
*
|
758 |
|
|
* @return true if the component is showing on the screen
|
759 |
|
|
* @see #setVisible(boolean)
|
760 |
|
|
*/
|
761 |
|
|
public boolean isShowing()
|
762 |
|
|
{
|
763 |
|
|
if (! visible || peer == null)
|
764 |
|
|
return false;
|
765 |
|
|
|
766 |
|
|
return parent == null ? false : parent.isShowing();
|
767 |
|
|
}
|
768 |
|
|
|
769 |
|
|
/**
|
770 |
|
|
* Tests whether or not this component is enabled. Components are enabled
|
771 |
|
|
* by default, and must be enabled to receive user input or generate events.
|
772 |
|
|
*
|
773 |
|
|
* @return true if the component is enabled
|
774 |
|
|
* @see #setEnabled(boolean)
|
775 |
|
|
*/
|
776 |
|
|
public boolean isEnabled()
|
777 |
|
|
{
|
778 |
|
|
return enabled;
|
779 |
|
|
}
|
780 |
|
|
|
781 |
|
|
/**
|
782 |
|
|
* Enables or disables this component. The component must be enabled to
|
783 |
|
|
* receive events (except that lightweight components always receive mouse
|
784 |
|
|
* events).
|
785 |
|
|
*
|
786 |
|
|
* @param enabled true to enable this component
|
787 |
|
|
*
|
788 |
|
|
* @see #isEnabled()
|
789 |
|
|
* @see #isLightweight()
|
790 |
|
|
*
|
791 |
|
|
* @since 1.1
|
792 |
|
|
*/
|
793 |
|
|
public void setEnabled(boolean enabled)
|
794 |
|
|
{
|
795 |
|
|
enable(enabled);
|
796 |
|
|
}
|
797 |
|
|
|
798 |
|
|
/**
|
799 |
|
|
* Enables this component.
|
800 |
|
|
*
|
801 |
|
|
* @deprecated use {@link #setEnabled(boolean)} instead
|
802 |
|
|
*/
|
803 |
|
|
public void enable()
|
804 |
|
|
{
|
805 |
|
|
this.enabled = true;
|
806 |
|
|
if (peer != null)
|
807 |
|
|
peer.setEnabled (true);
|
808 |
|
|
}
|
809 |
|
|
|
810 |
|
|
/**
|
811 |
|
|
* Enables or disables this component.
|
812 |
|
|
*
|
813 |
|
|
* @param enabled true to enable this component
|
814 |
|
|
*
|
815 |
|
|
* @deprecated use {@link #setEnabled(boolean)} instead
|
816 |
|
|
*/
|
817 |
|
|
public void enable(boolean enabled)
|
818 |
|
|
{
|
819 |
|
|
if (enabled)
|
820 |
|
|
enable();
|
821 |
|
|
else
|
822 |
|
|
disable();
|
823 |
|
|
}
|
824 |
|
|
|
825 |
|
|
/**
|
826 |
|
|
* Disables this component.
|
827 |
|
|
*
|
828 |
|
|
* @deprecated use {@link #setEnabled(boolean)} instead
|
829 |
|
|
*/
|
830 |
|
|
public void disable()
|
831 |
|
|
{
|
832 |
|
|
this.enabled = false;
|
833 |
|
|
if (peer != null)
|
834 |
|
|
peer.setEnabled (false);
|
835 |
|
|
}
|
836 |
|
|
|
837 |
|
|
/**
|
838 |
|
|
* Checks if this image is painted to an offscreen image buffer that is
|
839 |
|
|
* later copied to screen (double buffering reduces flicker). This version
|
840 |
|
|
* returns false, so subclasses must override it if they provide double
|
841 |
|
|
* buffering.
|
842 |
|
|
*
|
843 |
|
|
* @return true if this is double buffered; defaults to false
|
844 |
|
|
*/
|
845 |
|
|
public boolean isDoubleBuffered()
|
846 |
|
|
{
|
847 |
|
|
return false;
|
848 |
|
|
}
|
849 |
|
|
|
850 |
|
|
/**
|
851 |
|
|
* Enables or disables input method support for this component. By default,
|
852 |
|
|
* components have this enabled. Input methods are given the opportunity
|
853 |
|
|
* to process key events before this component and its listeners.
|
854 |
|
|
*
|
855 |
|
|
* @param enable true to enable input method processing
|
856 |
|
|
* @see #processKeyEvent(KeyEvent)
|
857 |
|
|
* @since 1.2
|
858 |
|
|
*/
|
859 |
|
|
public void enableInputMethods(boolean enable)
|
860 |
|
|
{
|
861 |
|
|
if (enable)
|
862 |
|
|
eventMask |= AWTEvent.INPUT_ENABLED_EVENT_MASK;
|
863 |
|
|
else
|
864 |
|
|
eventMask &= ~AWTEvent.INPUT_ENABLED_EVENT_MASK;
|
865 |
|
|
}
|
866 |
|
|
|
867 |
|
|
/**
|
868 |
|
|
* Makes this component visible or invisible. Note that it wtill might
|
869 |
|
|
* not show the component, if a parent is invisible.
|
870 |
|
|
*
|
871 |
|
|
* @param visible true to make this component visible
|
872 |
|
|
*
|
873 |
|
|
* @see #isVisible()
|
874 |
|
|
*
|
875 |
|
|
* @since 1.1
|
876 |
|
|
*/
|
877 |
|
|
public void setVisible(boolean visible)
|
878 |
|
|
{
|
879 |
|
|
// Inspection by subclassing shows that Sun's implementation calls
|
880 |
|
|
// show(boolean) which then calls show() or hide(). It is the show()
|
881 |
|
|
// method that is overriden in subclasses like Window.
|
882 |
|
|
show(visible);
|
883 |
|
|
}
|
884 |
|
|
|
885 |
|
|
/**
|
886 |
|
|
* Makes this component visible on the screen.
|
887 |
|
|
*
|
888 |
|
|
* @deprecated use {@link #setVisible(boolean)} instead
|
889 |
|
|
*/
|
890 |
|
|
public void show()
|
891 |
|
|
{
|
892 |
|
|
// We must set visible before showing the peer. Otherwise the
|
893 |
|
|
// peer could post paint events before visible is true, in which
|
894 |
|
|
// case lightweight components are not initially painted --
|
895 |
|
|
// Container.paint first calls isShowing () before painting itself
|
896 |
|
|
// and its children.
|
897 |
|
|
if(!isVisible())
|
898 |
|
|
{
|
899 |
|
|
this.visible = true;
|
900 |
|
|
// Avoid NullPointerExceptions by creating a local reference.
|
901 |
|
|
ComponentPeer currentPeer=peer;
|
902 |
|
|
if (currentPeer != null)
|
903 |
|
|
currentPeer.setVisible(true);
|
904 |
|
|
|
905 |
|
|
// The JDK repaints the component before invalidating the parent.
|
906 |
|
|
// So do we.
|
907 |
|
|
if (isShowing())
|
908 |
|
|
repaint();
|
909 |
|
|
// Invalidate the parent if we have one. The component itself must
|
910 |
|
|
// not be invalidated. We also avoid NullPointerException with
|
911 |
|
|
// a local reference here.
|
912 |
|
|
Container currentParent = parent;
|
913 |
|
|
if (currentParent != null)
|
914 |
|
|
currentParent.invalidate();
|
915 |
|
|
|
916 |
|
|
ComponentEvent ce =
|
917 |
|
|
new ComponentEvent(this,ComponentEvent.COMPONENT_SHOWN);
|
918 |
|
|
getToolkit().getSystemEventQueue().postEvent(ce);
|
919 |
|
|
}
|
920 |
|
|
}
|
921 |
|
|
|
922 |
|
|
/**
|
923 |
|
|
* Makes this component visible or invisible.
|
924 |
|
|
*
|
925 |
|
|
* @param visible true to make this component visible
|
926 |
|
|
*
|
927 |
|
|
* @deprecated use {@link #setVisible(boolean)} instead
|
928 |
|
|
*/
|
929 |
|
|
public void show(boolean visible)
|
930 |
|
|
{
|
931 |
|
|
if (visible)
|
932 |
|
|
show();
|
933 |
|
|
else
|
934 |
|
|
hide();
|
935 |
|
|
}
|
936 |
|
|
|
937 |
|
|
/**
|
938 |
|
|
* Hides this component so that it is no longer shown on the screen.
|
939 |
|
|
*
|
940 |
|
|
* @deprecated use {@link #setVisible(boolean)} instead
|
941 |
|
|
*/
|
942 |
|
|
public void hide()
|
943 |
|
|
{
|
944 |
|
|
if (isVisible())
|
945 |
|
|
{
|
946 |
|
|
// Avoid NullPointerExceptions by creating a local reference.
|
947 |
|
|
ComponentPeer currentPeer=peer;
|
948 |
|
|
if (currentPeer != null)
|
949 |
|
|
currentPeer.setVisible(false);
|
950 |
|
|
boolean wasShowing = isShowing();
|
951 |
|
|
this.visible = false;
|
952 |
|
|
|
953 |
|
|
// The JDK repaints the component before invalidating the parent.
|
954 |
|
|
// So do we.
|
955 |
|
|
if (wasShowing)
|
956 |
|
|
repaint();
|
957 |
|
|
// Invalidate the parent if we have one. The component itself must
|
958 |
|
|
// not be invalidated. We also avoid NullPointerException with
|
959 |
|
|
// a local reference here.
|
960 |
|
|
Container currentParent = parent;
|
961 |
|
|
if (currentParent != null)
|
962 |
|
|
currentParent.invalidate();
|
963 |
|
|
|
964 |
|
|
ComponentEvent ce =
|
965 |
|
|
new ComponentEvent(this,ComponentEvent.COMPONENT_HIDDEN);
|
966 |
|
|
getToolkit().getSystemEventQueue().postEvent(ce);
|
967 |
|
|
}
|
968 |
|
|
}
|
969 |
|
|
|
970 |
|
|
/**
|
971 |
|
|
* Returns this component's foreground color. If not set, this is inherited
|
972 |
|
|
* from the parent.
|
973 |
|
|
*
|
974 |
|
|
* @return this component's foreground color, or null
|
975 |
|
|
* @see #setForeground(Color)
|
976 |
|
|
*/
|
977 |
|
|
public Color getForeground()
|
978 |
|
|
{
|
979 |
|
|
if (foreground != null)
|
980 |
|
|
return foreground;
|
981 |
|
|
return parent == null ? null : parent.getForeground();
|
982 |
|
|
}
|
983 |
|
|
|
984 |
|
|
/**
|
985 |
|
|
* Sets this component's foreground color to the specified color. This is a
|
986 |
|
|
* bound property.
|
987 |
|
|
*
|
988 |
|
|
* @param c the new foreground color
|
989 |
|
|
* @see #getForeground()
|
990 |
|
|
*/
|
991 |
|
|
public void setForeground(Color c)
|
992 |
|
|
{
|
993 |
|
|
if (peer != null)
|
994 |
|
|
peer.setForeground(c);
|
995 |
|
|
|
996 |
|
|
Color previous = foreground;
|
997 |
|
|
foreground = c;
|
998 |
|
|
firePropertyChange("foreground", previous, c);
|
999 |
|
|
}
|
1000 |
|
|
|
1001 |
|
|
/**
|
1002 |
|
|
* Tests if the foreground was explicitly set, or just inherited from the
|
1003 |
|
|
* parent.
|
1004 |
|
|
*
|
1005 |
|
|
* @return true if the foreground has been set
|
1006 |
|
|
* @since 1.4
|
1007 |
|
|
*/
|
1008 |
|
|
public boolean isForegroundSet()
|
1009 |
|
|
{
|
1010 |
|
|
return foreground != null;
|
1011 |
|
|
}
|
1012 |
|
|
|
1013 |
|
|
/**
|
1014 |
|
|
* Returns this component's background color. If not set, this is inherited
|
1015 |
|
|
* from the parent.
|
1016 |
|
|
*
|
1017 |
|
|
* @return the background color of the component, or null
|
1018 |
|
|
* @see #setBackground(Color)
|
1019 |
|
|
*/
|
1020 |
|
|
public Color getBackground()
|
1021 |
|
|
{
|
1022 |
|
|
if (background != null)
|
1023 |
|
|
return background;
|
1024 |
|
|
return parent == null ? null : parent.getBackground();
|
1025 |
|
|
}
|
1026 |
|
|
|
1027 |
|
|
/**
|
1028 |
|
|
* Sets this component's background color to the specified color. The parts
|
1029 |
|
|
* of the component affected by the background color may by system dependent.
|
1030 |
|
|
* This is a bound property.
|
1031 |
|
|
*
|
1032 |
|
|
* @param c the new background color
|
1033 |
|
|
* @see #getBackground()
|
1034 |
|
|
*/
|
1035 |
|
|
public void setBackground(Color c)
|
1036 |
|
|
{
|
1037 |
|
|
// return if the background is already set to that color.
|
1038 |
|
|
if ((c != null) && c.equals(background))
|
1039 |
|
|
return;
|
1040 |
|
|
|
1041 |
|
|
// If c is null, inherit from closest ancestor whose bg is set.
|
1042 |
|
|
if (c == null && parent != null)
|
1043 |
|
|
c = parent.getBackground();
|
1044 |
|
|
if (peer != null && c != null)
|
1045 |
|
|
peer.setBackground(c);
|
1046 |
|
|
|
1047 |
|
|
Color previous = background;
|
1048 |
|
|
background = c;
|
1049 |
|
|
firePropertyChange("background", previous, c);
|
1050 |
|
|
}
|
1051 |
|
|
|
1052 |
|
|
/**
|
1053 |
|
|
* Tests if the background was explicitly set, or just inherited from the
|
1054 |
|
|
* parent.
|
1055 |
|
|
*
|
1056 |
|
|
* @return true if the background has been set
|
1057 |
|
|
* @since 1.4
|
1058 |
|
|
*/
|
1059 |
|
|
public boolean isBackgroundSet()
|
1060 |
|
|
{
|
1061 |
|
|
return background != null;
|
1062 |
|
|
}
|
1063 |
|
|
|
1064 |
|
|
/**
|
1065 |
|
|
* Returns the font in use for this component. If not set, this is inherited
|
1066 |
|
|
* from the parent.
|
1067 |
|
|
*
|
1068 |
|
|
* @return the font for this component
|
1069 |
|
|
* @see #setFont(Font)
|
1070 |
|
|
*/
|
1071 |
|
|
public Font getFont()
|
1072 |
|
|
{
|
1073 |
|
|
Font f = font;
|
1074 |
|
|
if (f != null)
|
1075 |
|
|
return f;
|
1076 |
|
|
|
1077 |
|
|
Component p = parent;
|
1078 |
|
|
if (p != null)
|
1079 |
|
|
return p.getFont();
|
1080 |
|
|
if (peer != null)
|
1081 |
|
|
return peer.getGraphics().getFont();
|
1082 |
|
|
return null;
|
1083 |
|
|
}
|
1084 |
|
|
|
1085 |
|
|
/**
|
1086 |
|
|
* Sets the font for this component to the specified font. This is a bound
|
1087 |
|
|
* property.
|
1088 |
|
|
*
|
1089 |
|
|
* @param newFont the new font for this component
|
1090 |
|
|
*
|
1091 |
|
|
* @see #getFont()
|
1092 |
|
|
*/
|
1093 |
|
|
public void setFont(Font newFont)
|
1094 |
|
|
{
|
1095 |
|
|
if((newFont != null && (font == null || !font.equals(newFont)))
|
1096 |
|
|
|| newFont == null)
|
1097 |
|
|
{
|
1098 |
|
|
Font oldFont = font;
|
1099 |
|
|
font = newFont;
|
1100 |
|
|
if (peer != null)
|
1101 |
|
|
peer.setFont(font);
|
1102 |
|
|
firePropertyChange("font", oldFont, newFont);
|
1103 |
|
|
invalidate();
|
1104 |
|
|
}
|
1105 |
|
|
}
|
1106 |
|
|
|
1107 |
|
|
/**
|
1108 |
|
|
* Tests if the font was explicitly set, or just inherited from the parent.
|
1109 |
|
|
*
|
1110 |
|
|
* @return true if the font has been set
|
1111 |
|
|
* @since 1.4
|
1112 |
|
|
*/
|
1113 |
|
|
public boolean isFontSet()
|
1114 |
|
|
{
|
1115 |
|
|
return font != null;
|
1116 |
|
|
}
|
1117 |
|
|
|
1118 |
|
|
/**
|
1119 |
|
|
* Returns the locale for this component. If this component does not
|
1120 |
|
|
* have a locale, the locale of the parent component is returned.
|
1121 |
|
|
*
|
1122 |
|
|
* @return the locale for this component
|
1123 |
|
|
* @throws IllegalComponentStateException if it has no locale or parent
|
1124 |
|
|
* @see #setLocale(Locale)
|
1125 |
|
|
* @since 1.1
|
1126 |
|
|
*/
|
1127 |
|
|
public Locale getLocale()
|
1128 |
|
|
{
|
1129 |
|
|
if (locale != null)
|
1130 |
|
|
return locale;
|
1131 |
|
|
if (parent == null)
|
1132 |
|
|
throw new IllegalComponentStateException
|
1133 |
|
|
("Component has no parent: can't determine Locale");
|
1134 |
|
|
return parent.getLocale();
|
1135 |
|
|
}
|
1136 |
|
|
|
1137 |
|
|
/**
|
1138 |
|
|
* Sets the locale for this component to the specified locale. This is a
|
1139 |
|
|
* bound property.
|
1140 |
|
|
*
|
1141 |
|
|
* @param newLocale the new locale for this component
|
1142 |
|
|
*/
|
1143 |
|
|
public void setLocale(Locale newLocale)
|
1144 |
|
|
{
|
1145 |
|
|
if (locale == newLocale)
|
1146 |
|
|
return;
|
1147 |
|
|
|
1148 |
|
|
Locale oldLocale = locale;
|
1149 |
|
|
locale = newLocale;
|
1150 |
|
|
firePropertyChange("locale", oldLocale, newLocale);
|
1151 |
|
|
// New writing/layout direction or more/less room for localized labels.
|
1152 |
|
|
invalidate();
|
1153 |
|
|
}
|
1154 |
|
|
|
1155 |
|
|
/**
|
1156 |
|
|
* Returns the color model of the device this componet is displayed on.
|
1157 |
|
|
*
|
1158 |
|
|
* @return this object's color model
|
1159 |
|
|
* @see Toolkit#getColorModel()
|
1160 |
|
|
*/
|
1161 |
|
|
public ColorModel getColorModel()
|
1162 |
|
|
{
|
1163 |
|
|
GraphicsConfiguration config = getGraphicsConfiguration();
|
1164 |
|
|
return config != null ? config.getColorModel()
|
1165 |
|
|
: getToolkit().getColorModel();
|
1166 |
|
|
}
|
1167 |
|
|
|
1168 |
|
|
/**
|
1169 |
|
|
* Returns the location of this component's top left corner relative to
|
1170 |
|
|
* its parent component. This may be outdated, so for synchronous behavior,
|
1171 |
|
|
* you should use a component listner.
|
1172 |
|
|
*
|
1173 |
|
|
* @return the location of this component
|
1174 |
|
|
* @see #setLocation(int, int)
|
1175 |
|
|
* @see #getLocationOnScreen()
|
1176 |
|
|
* @since 1.1
|
1177 |
|
|
*/
|
1178 |
|
|
public Point getLocation()
|
1179 |
|
|
{
|
1180 |
|
|
return location ();
|
1181 |
|
|
}
|
1182 |
|
|
|
1183 |
|
|
/**
|
1184 |
|
|
* Returns the location of this component's top left corner in screen
|
1185 |
|
|
* coordinates.
|
1186 |
|
|
*
|
1187 |
|
|
* @return the location of this component in screen coordinates
|
1188 |
|
|
* @throws IllegalComponentStateException if the component is not showing
|
1189 |
|
|
*/
|
1190 |
|
|
public Point getLocationOnScreen()
|
1191 |
|
|
{
|
1192 |
|
|
if (! isShowing())
|
1193 |
|
|
throw new IllegalComponentStateException("component "
|
1194 |
|
|
+ getClass().getName()
|
1195 |
|
|
+ " not showing");
|
1196 |
|
|
// We know peer != null here.
|
1197 |
|
|
return peer.getLocationOnScreen();
|
1198 |
|
|
}
|
1199 |
|
|
|
1200 |
|
|
/**
|
1201 |
|
|
* Returns the location of this component's top left corner relative to
|
1202 |
|
|
* its parent component.
|
1203 |
|
|
*
|
1204 |
|
|
* @return the location of this component
|
1205 |
|
|
* @deprecated use {@link #getLocation()} instead
|
1206 |
|
|
*/
|
1207 |
|
|
public Point location()
|
1208 |
|
|
{
|
1209 |
|
|
return new Point (x, y);
|
1210 |
|
|
}
|
1211 |
|
|
|
1212 |
|
|
/**
|
1213 |
|
|
* Moves this component to the specified location, relative to the parent's
|
1214 |
|
|
* coordinates. The coordinates are the new upper left corner of this
|
1215 |
|
|
* component.
|
1216 |
|
|
*
|
1217 |
|
|
* @param x the new X coordinate of this component
|
1218 |
|
|
* @param y the new Y coordinate of this component
|
1219 |
|
|
* @see #getLocation()
|
1220 |
|
|
* @see #setBounds(int, int, int, int)
|
1221 |
|
|
*/
|
1222 |
|
|
public void setLocation(int x, int y)
|
1223 |
|
|
{
|
1224 |
|
|
move (x, y);
|
1225 |
|
|
}
|
1226 |
|
|
|
1227 |
|
|
/**
|
1228 |
|
|
* Moves this component to the specified location, relative to the parent's
|
1229 |
|
|
* coordinates. The coordinates are the new upper left corner of this
|
1230 |
|
|
* component.
|
1231 |
|
|
*
|
1232 |
|
|
* @param x the new X coordinate of this component
|
1233 |
|
|
* @param y the new Y coordinate of this component
|
1234 |
|
|
* @deprecated use {@link #setLocation(int, int)} instead
|
1235 |
|
|
*/
|
1236 |
|
|
public void move(int x, int y)
|
1237 |
|
|
{
|
1238 |
|
|
setBounds(x, y, this.width, this.height);
|
1239 |
|
|
}
|
1240 |
|
|
|
1241 |
|
|
/**
|
1242 |
|
|
* Moves this component to the specified location, relative to the parent's
|
1243 |
|
|
* coordinates. The coordinates are the new upper left corner of this
|
1244 |
|
|
* component.
|
1245 |
|
|
*
|
1246 |
|
|
* @param p new coordinates for this component
|
1247 |
|
|
* @throws NullPointerException if p is null
|
1248 |
|
|
* @see #getLocation()
|
1249 |
|
|
* @see #setBounds(int, int, int, int)
|
1250 |
|
|
* @since 1.1
|
1251 |
|
|
*/
|
1252 |
|
|
public void setLocation(Point p)
|
1253 |
|
|
{
|
1254 |
|
|
setLocation(p.x, p.y);
|
1255 |
|
|
}
|
1256 |
|
|
|
1257 |
|
|
/**
|
1258 |
|
|
* Returns the size of this object.
|
1259 |
|
|
*
|
1260 |
|
|
* @return the size of this object
|
1261 |
|
|
* @see #setSize(int, int)
|
1262 |
|
|
* @since 1.1
|
1263 |
|
|
*/
|
1264 |
|
|
public Dimension getSize()
|
1265 |
|
|
{
|
1266 |
|
|
return size ();
|
1267 |
|
|
}
|
1268 |
|
|
|
1269 |
|
|
/**
|
1270 |
|
|
* Returns the size of this object.
|
1271 |
|
|
*
|
1272 |
|
|
* @return the size of this object
|
1273 |
|
|
* @deprecated use {@link #getSize()} instead
|
1274 |
|
|
*/
|
1275 |
|
|
public Dimension size()
|
1276 |
|
|
{
|
1277 |
|
|
return new Dimension (width, height);
|
1278 |
|
|
}
|
1279 |
|
|
|
1280 |
|
|
/**
|
1281 |
|
|
* Sets the size of this component to the specified width and height.
|
1282 |
|
|
*
|
1283 |
|
|
* @param width the new width of this component
|
1284 |
|
|
* @param height the new height of this component
|
1285 |
|
|
* @see #getSize()
|
1286 |
|
|
* @see #setBounds(int, int, int, int)
|
1287 |
|
|
*/
|
1288 |
|
|
public void setSize(int width, int height)
|
1289 |
|
|
{
|
1290 |
|
|
resize (width, height);
|
1291 |
|
|
}
|
1292 |
|
|
|
1293 |
|
|
/**
|
1294 |
|
|
* Sets the size of this component to the specified value.
|
1295 |
|
|
*
|
1296 |
|
|
* @param width the new width of the component
|
1297 |
|
|
* @param height the new height of the component
|
1298 |
|
|
* @deprecated use {@link #setSize(int, int)} instead
|
1299 |
|
|
*/
|
1300 |
|
|
public void resize(int width, int height)
|
1301 |
|
|
{
|
1302 |
|
|
setBounds(this.x, this.y, width, height);
|
1303 |
|
|
}
|
1304 |
|
|
|
1305 |
|
|
/**
|
1306 |
|
|
* Sets the size of this component to the specified value.
|
1307 |
|
|
*
|
1308 |
|
|
* @param d the new size of this component
|
1309 |
|
|
* @throws NullPointerException if d is null
|
1310 |
|
|
* @see #setSize(int, int)
|
1311 |
|
|
* @see #setBounds(int, int, int, int)
|
1312 |
|
|
* @since 1.1
|
1313 |
|
|
*/
|
1314 |
|
|
public void setSize(Dimension d)
|
1315 |
|
|
{
|
1316 |
|
|
resize (d);
|
1317 |
|
|
}
|
1318 |
|
|
|
1319 |
|
|
/**
|
1320 |
|
|
* Sets the size of this component to the specified value.
|
1321 |
|
|
*
|
1322 |
|
|
* @param d the new size of this component
|
1323 |
|
|
* @throws NullPointerException if d is null
|
1324 |
|
|
* @deprecated use {@link #setSize(Dimension)} instead
|
1325 |
|
|
*/
|
1326 |
|
|
public void resize(Dimension d)
|
1327 |
|
|
{
|
1328 |
|
|
resize (d.width, d.height);
|
1329 |
|
|
}
|
1330 |
|
|
|
1331 |
|
|
/**
|
1332 |
|
|
* Returns a bounding rectangle for this component. Note that the
|
1333 |
|
|
* returned rectange is relative to this component's parent, not to
|
1334 |
|
|
* the screen.
|
1335 |
|
|
*
|
1336 |
|
|
* @return the bounding rectangle for this component
|
1337 |
|
|
* @see #setBounds(int, int, int, int)
|
1338 |
|
|
* @see #getLocation()
|
1339 |
|
|
* @see #getSize()
|
1340 |
|
|
*/
|
1341 |
|
|
public Rectangle getBounds()
|
1342 |
|
|
{
|
1343 |
|
|
return bounds ();
|
1344 |
|
|
}
|
1345 |
|
|
|
1346 |
|
|
/**
|
1347 |
|
|
* Returns a bounding rectangle for this component. Note that the
|
1348 |
|
|
* returned rectange is relative to this component's parent, not to
|
1349 |
|
|
* the screen.
|
1350 |
|
|
*
|
1351 |
|
|
* @return the bounding rectangle for this component
|
1352 |
|
|
* @deprecated use {@link #getBounds()} instead
|
1353 |
|
|
*/
|
1354 |
|
|
public Rectangle bounds()
|
1355 |
|
|
{
|
1356 |
|
|
return new Rectangle (x, y, width, height);
|
1357 |
|
|
}
|
1358 |
|
|
|
1359 |
|
|
/**
|
1360 |
|
|
* Sets the bounding rectangle for this component to the specified values.
|
1361 |
|
|
* Note that these coordinates are relative to the parent, not to the screen.
|
1362 |
|
|
*
|
1363 |
|
|
* @param x the X coordinate of the upper left corner of the rectangle
|
1364 |
|
|
* @param y the Y coordinate of the upper left corner of the rectangle
|
1365 |
|
|
* @param w the width of the rectangle
|
1366 |
|
|
* @param h the height of the rectangle
|
1367 |
|
|
* @see #getBounds()
|
1368 |
|
|
* @see #setLocation(int, int)
|
1369 |
|
|
* @see #setLocation(Point)
|
1370 |
|
|
* @see #setSize(int, int)
|
1371 |
|
|
* @see #setSize(Dimension)
|
1372 |
|
|
* @since 1.1
|
1373 |
|
|
*/
|
1374 |
|
|
public void setBounds(int x, int y, int w, int h)
|
1375 |
|
|
{
|
1376 |
|
|
reshape (x, y, w, h);
|
1377 |
|
|
}
|
1378 |
|
|
|
1379 |
|
|
/**
|
1380 |
|
|
* Sets the bounding rectangle for this component to the specified values.
|
1381 |
|
|
* Note that these coordinates are relative to the parent, not to the screen.
|
1382 |
|
|
*
|
1383 |
|
|
* @param x the X coordinate of the upper left corner of the rectangle
|
1384 |
|
|
* @param y the Y coordinate of the upper left corner of the rectangle
|
1385 |
|
|
* @param width the width of the rectangle
|
1386 |
|
|
* @param height the height of the rectangle
|
1387 |
|
|
* @deprecated use {@link #setBounds(int, int, int, int)} instead
|
1388 |
|
|
*/
|
1389 |
|
|
public void reshape(int x, int y, int width, int height)
|
1390 |
|
|
{
|
1391 |
|
|
int oldx = this.x;
|
1392 |
|
|
int oldy = this.y;
|
1393 |
|
|
int oldwidth = this.width;
|
1394 |
|
|
int oldheight = this.height;
|
1395 |
|
|
|
1396 |
|
|
if (this.x == x && this.y == y
|
1397 |
|
|
&& this.width == width && this.height == height)
|
1398 |
|
|
return;
|
1399 |
|
|
invalidate ();
|
1400 |
|
|
this.x = x;
|
1401 |
|
|
this.y = y;
|
1402 |
|
|
this.width = width;
|
1403 |
|
|
this.height = height;
|
1404 |
|
|
if (peer != null)
|
1405 |
|
|
peer.setBounds (x, y, width, height);
|
1406 |
|
|
|
1407 |
|
|
// Erase old bounds and repaint new bounds for lightweights.
|
1408 |
|
|
if (isLightweight() && isShowing())
|
1409 |
|
|
{
|
1410 |
|
|
if (parent != null)
|
1411 |
|
|
{
|
1412 |
|
|
Rectangle oldBounds = new Rectangle(oldx, oldy, oldwidth,
|
1413 |
|
|
oldheight);
|
1414 |
|
|
Rectangle newBounds = new Rectangle(x, y, width, height);
|
1415 |
|
|
Rectangle destroyed = oldBounds.union(newBounds);
|
1416 |
|
|
if (!destroyed.isEmpty())
|
1417 |
|
|
parent.repaint(0, destroyed.x, destroyed.y, destroyed.width,
|
1418 |
|
|
destroyed.height);
|
1419 |
|
|
}
|
1420 |
|
|
}
|
1421 |
|
|
|
1422 |
|
|
// Only post event if this component is visible and has changed size.
|
1423 |
|
|
if (isShowing ()
|
1424 |
|
|
&& (oldx != x || oldy != y))
|
1425 |
|
|
{
|
1426 |
|
|
ComponentEvent ce = new ComponentEvent(this,
|
1427 |
|
|
ComponentEvent.COMPONENT_MOVED);
|
1428 |
|
|
getToolkit().getSystemEventQueue().postEvent(ce);
|
1429 |
|
|
}
|
1430 |
|
|
if (isShowing ()
|
1431 |
|
|
&& (oldwidth != width || oldheight != height))
|
1432 |
|
|
{
|
1433 |
|
|
ComponentEvent ce = new ComponentEvent(this,
|
1434 |
|
|
ComponentEvent.COMPONENT_RESIZED);
|
1435 |
|
|
getToolkit().getSystemEventQueue().postEvent(ce);
|
1436 |
|
|
}
|
1437 |
|
|
}
|
1438 |
|
|
|
1439 |
|
|
/**
|
1440 |
|
|
* Sets the bounding rectangle for this component to the specified
|
1441 |
|
|
* rectangle. Note that these coordinates are relative to the parent, not
|
1442 |
|
|
* to the screen.
|
1443 |
|
|
*
|
1444 |
|
|
* @param r the new bounding rectangle
|
1445 |
|
|
* @throws NullPointerException if r is null
|
1446 |
|
|
* @see #getBounds()
|
1447 |
|
|
* @see #setLocation(Point)
|
1448 |
|
|
* @see #setSize(Dimension)
|
1449 |
|
|
* @since 1.1
|
1450 |
|
|
*/
|
1451 |
|
|
public void setBounds(Rectangle r)
|
1452 |
|
|
{
|
1453 |
|
|
setBounds (r.x, r.y, r.width, r.height);
|
1454 |
|
|
}
|
1455 |
|
|
|
1456 |
|
|
/**
|
1457 |
|
|
* Gets the x coordinate of the upper left corner. This is more efficient
|
1458 |
|
|
* than getBounds().x or getLocation().x.
|
1459 |
|
|
*
|
1460 |
|
|
* @return the current x coordinate
|
1461 |
|
|
* @since 1.2
|
1462 |
|
|
*/
|
1463 |
|
|
public int getX()
|
1464 |
|
|
{
|
1465 |
|
|
return x;
|
1466 |
|
|
}
|
1467 |
|
|
|
1468 |
|
|
/**
|
1469 |
|
|
* Gets the y coordinate of the upper left corner. This is more efficient
|
1470 |
|
|
* than getBounds().y or getLocation().y.
|
1471 |
|
|
*
|
1472 |
|
|
* @return the current y coordinate
|
1473 |
|
|
* @since 1.2
|
1474 |
|
|
*/
|
1475 |
|
|
public int getY()
|
1476 |
|
|
{
|
1477 |
|
|
return y;
|
1478 |
|
|
}
|
1479 |
|
|
|
1480 |
|
|
/**
|
1481 |
|
|
* Gets the width of the component. This is more efficient than
|
1482 |
|
|
* getBounds().width or getSize().width.
|
1483 |
|
|
*
|
1484 |
|
|
* @return the current width
|
1485 |
|
|
* @since 1.2
|
1486 |
|
|
*/
|
1487 |
|
|
public int getWidth()
|
1488 |
|
|
{
|
1489 |
|
|
return width;
|
1490 |
|
|
}
|
1491 |
|
|
|
1492 |
|
|
/**
|
1493 |
|
|
* Gets the height of the component. This is more efficient than
|
1494 |
|
|
* getBounds().height or getSize().height.
|
1495 |
|
|
*
|
1496 |
|
|
* @return the current width
|
1497 |
|
|
* @since 1.2
|
1498 |
|
|
*/
|
1499 |
|
|
public int getHeight()
|
1500 |
|
|
{
|
1501 |
|
|
return height;
|
1502 |
|
|
}
|
1503 |
|
|
|
1504 |
|
|
/**
|
1505 |
|
|
* Returns the bounds of this component. This allows reuse of an existing
|
1506 |
|
|
* rectangle, if r is non-null.
|
1507 |
|
|
*
|
1508 |
|
|
* @param r the rectangle to use, or null
|
1509 |
|
|
* @return the bounds
|
1510 |
|
|
*/
|
1511 |
|
|
public Rectangle getBounds(Rectangle r)
|
1512 |
|
|
{
|
1513 |
|
|
if (r == null)
|
1514 |
|
|
r = new Rectangle();
|
1515 |
|
|
r.x = x;
|
1516 |
|
|
r.y = y;
|
1517 |
|
|
r.width = width;
|
1518 |
|
|
r.height = height;
|
1519 |
|
|
return r;
|
1520 |
|
|
}
|
1521 |
|
|
|
1522 |
|
|
/**
|
1523 |
|
|
* Returns the size of this component. This allows reuse of an existing
|
1524 |
|
|
* dimension, if d is non-null.
|
1525 |
|
|
*
|
1526 |
|
|
* @param d the dimension to use, or null
|
1527 |
|
|
* @return the size
|
1528 |
|
|
*/
|
1529 |
|
|
public Dimension getSize(Dimension d)
|
1530 |
|
|
{
|
1531 |
|
|
if (d == null)
|
1532 |
|
|
d = new Dimension();
|
1533 |
|
|
d.width = width;
|
1534 |
|
|
d.height = height;
|
1535 |
|
|
return d;
|
1536 |
|
|
}
|
1537 |
|
|
|
1538 |
|
|
/**
|
1539 |
|
|
* Returns the location of this component. This allows reuse of an existing
|
1540 |
|
|
* point, if p is non-null.
|
1541 |
|
|
*
|
1542 |
|
|
* @param p the point to use, or null
|
1543 |
|
|
* @return the location
|
1544 |
|
|
*/
|
1545 |
|
|
public Point getLocation(Point p)
|
1546 |
|
|
{
|
1547 |
|
|
if (p == null)
|
1548 |
|
|
p = new Point();
|
1549 |
|
|
p.x = x;
|
1550 |
|
|
p.y = y;
|
1551 |
|
|
return p;
|
1552 |
|
|
}
|
1553 |
|
|
|
1554 |
|
|
/**
|
1555 |
|
|
* Tests if this component is opaque. All "heavyweight" (natively-drawn)
|
1556 |
|
|
* components are opaque. A component is opaque if it draws all pixels in
|
1557 |
|
|
* the bounds; a lightweight component is partially transparent if it lets
|
1558 |
|
|
* pixels underneath show through. Subclasses that guarantee that all pixels
|
1559 |
|
|
* will be drawn should override this.
|
1560 |
|
|
*
|
1561 |
|
|
* @return true if this is opaque
|
1562 |
|
|
* @see #isLightweight()
|
1563 |
|
|
* @since 1.2
|
1564 |
|
|
*/
|
1565 |
|
|
public boolean isOpaque()
|
1566 |
|
|
{
|
1567 |
|
|
return ! isLightweight();
|
1568 |
|
|
}
|
1569 |
|
|
|
1570 |
|
|
/**
|
1571 |
|
|
* Return whether the component is lightweight. That means the component has
|
1572 |
|
|
* no native peer, but is displayable. This applies to subclasses of
|
1573 |
|
|
* Component not in this package, such as javax.swing.
|
1574 |
|
|
*
|
1575 |
|
|
* @return true if the component has a lightweight peer
|
1576 |
|
|
* @see #isDisplayable()
|
1577 |
|
|
* @since 1.2
|
1578 |
|
|
*/
|
1579 |
|
|
public boolean isLightweight()
|
1580 |
|
|
{
|
1581 |
|
|
return peer instanceof LightweightPeer;
|
1582 |
|
|
}
|
1583 |
|
|
|
1584 |
|
|
/**
|
1585 |
|
|
* Returns the component's preferred size.
|
1586 |
|
|
*
|
1587 |
|
|
* @return the component's preferred size
|
1588 |
|
|
* @see #getMinimumSize()
|
1589 |
|
|
* @see LayoutManager
|
1590 |
|
|
*/
|
1591 |
|
|
public Dimension getPreferredSize()
|
1592 |
|
|
{
|
1593 |
|
|
return preferredSize();
|
1594 |
|
|
}
|
1595 |
|
|
|
1596 |
|
|
/**
|
1597 |
|
|
* Returns the component's preferred size.
|
1598 |
|
|
*
|
1599 |
|
|
* @return the component's preferred size
|
1600 |
|
|
* @deprecated use {@link #getPreferredSize()} instead
|
1601 |
|
|
*/
|
1602 |
|
|
public Dimension preferredSize()
|
1603 |
|
|
{
|
1604 |
|
|
if (prefSize == null)
|
1605 |
|
|
if (peer == null)
|
1606 |
|
|
return new Dimension(width, height);
|
1607 |
|
|
else
|
1608 |
|
|
prefSize = peer.getPreferredSize();
|
1609 |
|
|
return prefSize;
|
1610 |
|
|
}
|
1611 |
|
|
|
1612 |
|
|
/**
|
1613 |
|
|
* Returns the component's minimum size.
|
1614 |
|
|
*
|
1615 |
|
|
* @return the component's minimum size
|
1616 |
|
|
* @see #getPreferredSize()
|
1617 |
|
|
* @see LayoutManager
|
1618 |
|
|
*/
|
1619 |
|
|
public Dimension getMinimumSize()
|
1620 |
|
|
{
|
1621 |
|
|
return minimumSize();
|
1622 |
|
|
}
|
1623 |
|
|
|
1624 |
|
|
/**
|
1625 |
|
|
* Returns the component's minimum size.
|
1626 |
|
|
*
|
1627 |
|
|
* @return the component's minimum size
|
1628 |
|
|
* @deprecated use {@link #getMinimumSize()} instead
|
1629 |
|
|
*/
|
1630 |
|
|
public Dimension minimumSize()
|
1631 |
|
|
{
|
1632 |
|
|
if (minSize == null)
|
1633 |
|
|
minSize = (peer != null ? peer.getMinimumSize()
|
1634 |
|
|
: new Dimension(width, height));
|
1635 |
|
|
return minSize;
|
1636 |
|
|
}
|
1637 |
|
|
|
1638 |
|
|
/**
|
1639 |
|
|
* Returns the component's maximum size.
|
1640 |
|
|
*
|
1641 |
|
|
* @return the component's maximum size
|
1642 |
|
|
* @see #getMinimumSize()
|
1643 |
|
|
* @see #getPreferredSize()
|
1644 |
|
|
* @see LayoutManager
|
1645 |
|
|
*/
|
1646 |
|
|
public Dimension getMaximumSize()
|
1647 |
|
|
{
|
1648 |
|
|
return new Dimension(Short.MAX_VALUE, Short.MAX_VALUE);
|
1649 |
|
|
}
|
1650 |
|
|
|
1651 |
|
|
/**
|
1652 |
|
|
* Returns the preferred horizontal alignment of this component. The value
|
1653 |
|
|
* returned will be between {@link #LEFT_ALIGNMENT} and
|
1654 |
|
|
* {@link #RIGHT_ALIGNMENT}, inclusive.
|
1655 |
|
|
*
|
1656 |
|
|
* @return the preferred horizontal alignment of this component
|
1657 |
|
|
*/
|
1658 |
|
|
public float getAlignmentX()
|
1659 |
|
|
{
|
1660 |
|
|
return CENTER_ALIGNMENT;
|
1661 |
|
|
}
|
1662 |
|
|
|
1663 |
|
|
/**
|
1664 |
|
|
* Returns the preferred vertical alignment of this component. The value
|
1665 |
|
|
* returned will be between {@link #TOP_ALIGNMENT} and
|
1666 |
|
|
* {@link #BOTTOM_ALIGNMENT}, inclusive.
|
1667 |
|
|
*
|
1668 |
|
|
* @return the preferred vertical alignment of this component
|
1669 |
|
|
*/
|
1670 |
|
|
public float getAlignmentY()
|
1671 |
|
|
{
|
1672 |
|
|
return CENTER_ALIGNMENT;
|
1673 |
|
|
}
|
1674 |
|
|
|
1675 |
|
|
/**
|
1676 |
|
|
* Calls the layout manager to re-layout the component. This is called
|
1677 |
|
|
* during validation of a container in most cases.
|
1678 |
|
|
*
|
1679 |
|
|
* @see #validate()
|
1680 |
|
|
* @see LayoutManager
|
1681 |
|
|
*/
|
1682 |
|
|
public void doLayout()
|
1683 |
|
|
{
|
1684 |
|
|
layout ();
|
1685 |
|
|
}
|
1686 |
|
|
|
1687 |
|
|
/**
|
1688 |
|
|
* Calls the layout manager to re-layout the component. This is called
|
1689 |
|
|
* during validation of a container in most cases.
|
1690 |
|
|
*
|
1691 |
|
|
* @deprecated use {@link #doLayout()} instead
|
1692 |
|
|
*/
|
1693 |
|
|
public void layout()
|
1694 |
|
|
{
|
1695 |
|
|
// Nothing to do unless we're a container.
|
1696 |
|
|
}
|
1697 |
|
|
|
1698 |
|
|
/**
|
1699 |
|
|
* Called to ensure that the layout for this component is valid. This is
|
1700 |
|
|
* usually called on containers.
|
1701 |
|
|
*
|
1702 |
|
|
* @see #invalidate()
|
1703 |
|
|
* @see #doLayout()
|
1704 |
|
|
* @see LayoutManager
|
1705 |
|
|
* @see Container#validate()
|
1706 |
|
|
*/
|
1707 |
|
|
public void validate()
|
1708 |
|
|
{
|
1709 |
|
|
valid = true;
|
1710 |
|
|
}
|
1711 |
|
|
|
1712 |
|
|
/**
|
1713 |
|
|
* Invalidates this component and all of its parent components. This will
|
1714 |
|
|
* cause them to have their layout redone. This is called frequently, so
|
1715 |
|
|
* make it fast.
|
1716 |
|
|
*/
|
1717 |
|
|
public void invalidate()
|
1718 |
|
|
{
|
1719 |
|
|
valid = false;
|
1720 |
|
|
prefSize = null;
|
1721 |
|
|
minSize = null;
|
1722 |
|
|
if (parent != null && parent.isValid())
|
1723 |
|
|
parent.invalidate();
|
1724 |
|
|
}
|
1725 |
|
|
|
1726 |
|
|
/**
|
1727 |
|
|
* Returns a graphics object for this component. Returns <code>null</code>
|
1728 |
|
|
* if this component is not currently displayed on the screen.
|
1729 |
|
|
*
|
1730 |
|
|
* @return a graphics object for this component
|
1731 |
|
|
* @see #paint(Graphics)
|
1732 |
|
|
*/
|
1733 |
|
|
public Graphics getGraphics()
|
1734 |
|
|
{
|
1735 |
|
|
if (peer != null)
|
1736 |
|
|
{
|
1737 |
|
|
Graphics gfx = peer.getGraphics();
|
1738 |
|
|
// Create peer for lightweights.
|
1739 |
|
|
if (gfx == null && parent != null)
|
1740 |
|
|
{
|
1741 |
|
|
gfx = parent.getGraphics();
|
1742 |
|
|
Rectangle bounds = getBounds();
|
1743 |
|
|
gfx.setClip(bounds);
|
1744 |
|
|
gfx.translate(bounds.x, bounds.y);
|
1745 |
|
|
return gfx;
|
1746 |
|
|
}
|
1747 |
|
|
gfx.setFont(font);
|
1748 |
|
|
return gfx;
|
1749 |
|
|
}
|
1750 |
|
|
return null;
|
1751 |
|
|
}
|
1752 |
|
|
|
1753 |
|
|
/**
|
1754 |
|
|
* Returns the font metrics for the specified font in this component.
|
1755 |
|
|
*
|
1756 |
|
|
* @param font the font to retrieve metrics for
|
1757 |
|
|
* @return the font metrics for the specified font
|
1758 |
|
|
* @throws NullPointerException if font is null
|
1759 |
|
|
* @see #getFont()
|
1760 |
|
|
* @see Toolkit#getFontMetrics(Font)
|
1761 |
|
|
*/
|
1762 |
|
|
public FontMetrics getFontMetrics(Font font)
|
1763 |
|
|
{
|
1764 |
|
|
return peer == null ? getToolkit().getFontMetrics(font)
|
1765 |
|
|
: peer.getFontMetrics(font);
|
1766 |
|
|
}
|
1767 |
|
|
|
1768 |
|
|
/**
|
1769 |
|
|
* Sets the cursor for this component to the specified cursor. The cursor
|
1770 |
|
|
* is displayed when the point is contained by the component, and the
|
1771 |
|
|
* component is visible, displayable, and enabled. This is inherited by
|
1772 |
|
|
* subcomponents unless they set their own cursor.
|
1773 |
|
|
*
|
1774 |
|
|
* @param cursor the new cursor for this component
|
1775 |
|
|
* @see #isEnabled()
|
1776 |
|
|
* @see #isShowing()
|
1777 |
|
|
* @see #getCursor()
|
1778 |
|
|
* @see #contains(int, int)
|
1779 |
|
|
* @see Toolkit#createCustomCursor(Image, Point, String)
|
1780 |
|
|
*/
|
1781 |
|
|
public void setCursor(Cursor cursor)
|
1782 |
|
|
{
|
1783 |
|
|
this.cursor = cursor;
|
1784 |
|
|
if (peer != null)
|
1785 |
|
|
peer.setCursor(cursor);
|
1786 |
|
|
}
|
1787 |
|
|
|
1788 |
|
|
/**
|
1789 |
|
|
* Returns the cursor for this component. If not set, this is inherited
|
1790 |
|
|
* from the parent, or from Cursor.getDefaultCursor().
|
1791 |
|
|
*
|
1792 |
|
|
* @return the cursor for this component
|
1793 |
|
|
*/
|
1794 |
|
|
public Cursor getCursor()
|
1795 |
|
|
{
|
1796 |
|
|
if (cursor != null)
|
1797 |
|
|
return cursor;
|
1798 |
|
|
return parent != null ? parent.getCursor() : Cursor.getDefaultCursor();
|
1799 |
|
|
}
|
1800 |
|
|
|
1801 |
|
|
/**
|
1802 |
|
|
* Tests if the cursor was explicitly set, or just inherited from the parent.
|
1803 |
|
|
*
|
1804 |
|
|
* @return true if the cursor has been set
|
1805 |
|
|
* @since 1.4
|
1806 |
|
|
*/
|
1807 |
|
|
public boolean isCursorSet()
|
1808 |
|
|
{
|
1809 |
|
|
return cursor != null;
|
1810 |
|
|
}
|
1811 |
|
|
|
1812 |
|
|
/**
|
1813 |
|
|
* Paints this component on the screen. The clipping region in the graphics
|
1814 |
|
|
* context will indicate the region that requires painting. This is called
|
1815 |
|
|
* whenever the component first shows, or needs to be repaired because
|
1816 |
|
|
* something was temporarily drawn on top. It is not necessary for
|
1817 |
|
|
* subclasses to call <code>super.paint(g)</code>. Components with no area
|
1818 |
|
|
* are not painted.
|
1819 |
|
|
*
|
1820 |
|
|
* @param g the graphics context for this paint job
|
1821 |
|
|
* @see #update(Graphics)
|
1822 |
|
|
*/
|
1823 |
|
|
public void paint(Graphics g)
|
1824 |
|
|
{
|
1825 |
|
|
// This is a callback method and is meant to be overridden by subclasses
|
1826 |
|
|
// that want to perform custom painting.
|
1827 |
|
|
}
|
1828 |
|
|
|
1829 |
|
|
/**
|
1830 |
|
|
* Updates this component. This is called in response to
|
1831 |
|
|
* <code>repaint</code>. This method fills the component with the
|
1832 |
|
|
* background color, then sets the foreground color of the specified
|
1833 |
|
|
* graphics context to the foreground color of this component and calls
|
1834 |
|
|
* the <code>paint()</code> method. The coordinates of the graphics are
|
1835 |
|
|
* relative to this component. Subclasses should call either
|
1836 |
|
|
* <code>super.update(g)</code> or <code>paint(g)</code>.
|
1837 |
|
|
*
|
1838 |
|
|
* @param g the graphics context for this update
|
1839 |
|
|
*
|
1840 |
|
|
* @see #paint(Graphics)
|
1841 |
|
|
* @see #repaint()
|
1842 |
|
|
*
|
1843 |
|
|
* @specnote In contrast to what the spec says, tests show that the exact
|
1844 |
|
|
* behaviour is to clear the background on lightweight and
|
1845 |
|
|
* top-level components only. Heavyweight components are not
|
1846 |
|
|
* affected by this method and only call paint().
|
1847 |
|
|
*/
|
1848 |
|
|
public void update(Graphics g)
|
1849 |
|
|
{
|
1850 |
|
|
// Tests show that the clearing of the background is only done in
|
1851 |
|
|
// two cases:
|
1852 |
|
|
// - If the component is lightweight (yes this is in contrast to the spec).
|
1853 |
|
|
// or
|
1854 |
|
|
// - If the component is a toplevel container.
|
1855 |
|
|
if (isLightweight() || getParent() == null)
|
1856 |
|
|
{
|
1857 |
|
|
Rectangle clip = g.getClipBounds();
|
1858 |
|
|
if (clip == null)
|
1859 |
|
|
g.clearRect(0, 0, width, height);
|
1860 |
|
|
else
|
1861 |
|
|
g.clearRect(clip.x, clip.y, clip.width, clip.height);
|
1862 |
|
|
}
|
1863 |
|
|
paint(g);
|
1864 |
|
|
}
|
1865 |
|
|
|
1866 |
|
|
/**
|
1867 |
|
|
* Paints this entire component, including any sub-components.
|
1868 |
|
|
*
|
1869 |
|
|
* @param g the graphics context for this paint job
|
1870 |
|
|
*
|
1871 |
|
|
* @see #paint(Graphics)
|
1872 |
|
|
*/
|
1873 |
|
|
public void paintAll(Graphics g)
|
1874 |
|
|
{
|
1875 |
|
|
if (! visible)
|
1876 |
|
|
return;
|
1877 |
|
|
paint(g);
|
1878 |
|
|
}
|
1879 |
|
|
|
1880 |
|
|
/**
|
1881 |
|
|
* Repaint this entire component. The <code>update()</code> method
|
1882 |
|
|
* on this component will be called as soon as possible.
|
1883 |
|
|
*
|
1884 |
|
|
* @see #update(Graphics)
|
1885 |
|
|
* @see #repaint(long, int, int, int, int)
|
1886 |
|
|
*/
|
1887 |
|
|
public void repaint()
|
1888 |
|
|
{
|
1889 |
|
|
if (isShowing())
|
1890 |
|
|
repaint(0, 0, 0, width, height);
|
1891 |
|
|
}
|
1892 |
|
|
|
1893 |
|
|
/**
|
1894 |
|
|
* Repaint this entire component. The <code>update()</code> method on this
|
1895 |
|
|
* component will be called in approximate the specified number of
|
1896 |
|
|
* milliseconds.
|
1897 |
|
|
*
|
1898 |
|
|
* @param tm milliseconds before this component should be repainted
|
1899 |
|
|
* @see #paint(Graphics)
|
1900 |
|
|
* @see #repaint(long, int, int, int, int)
|
1901 |
|
|
*/
|
1902 |
|
|
public void repaint(long tm)
|
1903 |
|
|
{
|
1904 |
|
|
if (isShowing())
|
1905 |
|
|
repaint(tm, 0, 0, width, height);
|
1906 |
|
|
}
|
1907 |
|
|
|
1908 |
|
|
/**
|
1909 |
|
|
* Repaints the specified rectangular region within this component. The
|
1910 |
|
|
* <code>update</code> method on this component will be called as soon as
|
1911 |
|
|
* possible. The coordinates are relative to this component.
|
1912 |
|
|
*
|
1913 |
|
|
* @param x the X coordinate of the upper left of the region to repaint
|
1914 |
|
|
* @param y the Y coordinate of the upper left of the region to repaint
|
1915 |
|
|
* @param w the width of the region to repaint
|
1916 |
|
|
* @param h the height of the region to repaint
|
1917 |
|
|
* @see #update(Graphics)
|
1918 |
|
|
* @see #repaint(long, int, int, int, int)
|
1919 |
|
|
*/
|
1920 |
|
|
public void repaint(int x, int y, int w, int h)
|
1921 |
|
|
{
|
1922 |
|
|
if (isShowing())
|
1923 |
|
|
repaint(0, x, y, w, h);
|
1924 |
|
|
}
|
1925 |
|
|
|
1926 |
|
|
/**
|
1927 |
|
|
* Repaints the specified rectangular region within this component. The
|
1928 |
|
|
* <code>update</code> method on this component will be called in
|
1929 |
|
|
* approximately the specified number of milliseconds. The coordinates
|
1930 |
|
|
* are relative to this component.
|
1931 |
|
|
*
|
1932 |
|
|
* @param tm milliseconds before this component should be repainted
|
1933 |
|
|
* @param x the X coordinate of the upper left of the region to repaint
|
1934 |
|
|
* @param y the Y coordinate of the upper left of the region to repaint
|
1935 |
|
|
* @param width the width of the region to repaint
|
1936 |
|
|
* @param height the height of the region to repaint
|
1937 |
|
|
* @see #update(Graphics)
|
1938 |
|
|
*/
|
1939 |
|
|
public void repaint(long tm, int x, int y, int width, int height)
|
1940 |
|
|
{
|
1941 |
|
|
if (isShowing())
|
1942 |
|
|
{
|
1943 |
|
|
ComponentPeer p = peer;
|
1944 |
|
|
if (p != null)
|
1945 |
|
|
p.repaint(tm, x, y, width, height);
|
1946 |
|
|
}
|
1947 |
|
|
}
|
1948 |
|
|
|
1949 |
|
|
/**
|
1950 |
|
|
* Prints this component. This method is provided so that printing can be
|
1951 |
|
|
* done in a different manner from painting. However, the implementation
|
1952 |
|
|
* in this class simply calls the <code>paint()</code> method.
|
1953 |
|
|
*
|
1954 |
|
|
* @param g the graphics context of the print device
|
1955 |
|
|
*
|
1956 |
|
|
* @see #paint(Graphics)
|
1957 |
|
|
*/
|
1958 |
|
|
public void print(Graphics g)
|
1959 |
|
|
{
|
1960 |
|
|
paint(g);
|
1961 |
|
|
}
|
1962 |
|
|
|
1963 |
|
|
/**
|
1964 |
|
|
* Prints this component, including all sub-components. This method is
|
1965 |
|
|
* provided so that printing can be done in a different manner from
|
1966 |
|
|
* painting. However, the implementation in this class simply calls the
|
1967 |
|
|
* <code>paintAll()</code> method.
|
1968 |
|
|
*
|
1969 |
|
|
* @param g the graphics context of the print device
|
1970 |
|
|
*
|
1971 |
|
|
* @see #paintAll(Graphics)
|
1972 |
|
|
*/
|
1973 |
|
|
public void printAll(Graphics g)
|
1974 |
|
|
{
|
1975 |
|
|
paintAll(g);
|
1976 |
|
|
}
|
1977 |
|
|
|
1978 |
|
|
/**
|
1979 |
|
|
* Called when an image has changed so that this component is repainted.
|
1980 |
|
|
* This incrementally draws an image as more bits are available, when
|
1981 |
|
|
* possible. Incremental drawing is enabled if the system property
|
1982 |
|
|
* <code>awt.image.incrementalDraw</code> is not present or is true, in which
|
1983 |
|
|
* case the redraw rate is set to 100ms or the value of the system property
|
1984 |
|
|
* <code>awt.image.redrawrate</code>.
|
1985 |
|
|
*
|
1986 |
|
|
* <p>The coordinate system used depends on the particular flags.
|
1987 |
|
|
*
|
1988 |
|
|
* @param img the image that has been updated
|
1989 |
|
|
* @param flags tlags as specified in <code>ImageObserver</code>
|
1990 |
|
|
* @param x the X coordinate
|
1991 |
|
|
* @param y the Y coordinate
|
1992 |
|
|
* @param w the width
|
1993 |
|
|
* @param h the height
|
1994 |
|
|
* @return false if the image is completely loaded, loading has been
|
1995 |
|
|
* aborted, or an error has occurred. true if more updates are
|
1996 |
|
|
* required.
|
1997 |
|
|
* @see ImageObserver
|
1998 |
|
|
* @see Graphics#drawImage(Image, int, int, Color, ImageObserver)
|
1999 |
|
|
* @see Graphics#drawImage(Image, int, int, ImageObserver)
|
2000 |
|
|
* @see Graphics#drawImage(Image, int, int, int, int, Color, ImageObserver)
|
2001 |
|
|
* @see Graphics#drawImage(Image, int, int, int, int, ImageObserver)
|
2002 |
|
|
* @see ImageObserver#imageUpdate(Image, int, int, int, int, int)
|
2003 |
|
|
*/
|
2004 |
|
|
public boolean imageUpdate(Image img, int flags, int x, int y, int w, int h)
|
2005 |
|
|
{
|
2006 |
|
|
if ((flags & (FRAMEBITS | ALLBITS)) != 0)
|
2007 |
|
|
repaint();
|
2008 |
|
|
else if ((flags & SOMEBITS) != 0)
|
2009 |
|
|
{
|
2010 |
|
|
if (incrementalDraw)
|
2011 |
|
|
{
|
2012 |
|
|
if (redrawRate != null)
|
2013 |
|
|
{
|
2014 |
|
|
long tm = redrawRate.longValue();
|
2015 |
|
|
if (tm < 0)
|
2016 |
|
|
tm = 0;
|
2017 |
|
|
repaint(tm);
|
2018 |
|
|
}
|
2019 |
|
|
else
|
2020 |
|
|
repaint(100);
|
2021 |
|
|
}
|
2022 |
|
|
}
|
2023 |
|
|
return (flags & (ALLBITS | ABORT | ERROR)) == 0;
|
2024 |
|
|
}
|
2025 |
|
|
|
2026 |
|
|
/**
|
2027 |
|
|
* Creates an image from the specified producer.
|
2028 |
|
|
*
|
2029 |
|
|
* @param producer the image procedure to create the image from
|
2030 |
|
|
* @return the resulting image
|
2031 |
|
|
*/
|
2032 |
|
|
public Image createImage(ImageProducer producer)
|
2033 |
|
|
{
|
2034 |
|
|
// Sun allows producer to be null.
|
2035 |
|
|
if (peer != null)
|
2036 |
|
|
return peer.createImage(producer);
|
2037 |
|
|
else
|
2038 |
|
|
return getToolkit().createImage(producer);
|
2039 |
|
|
}
|
2040 |
|
|
|
2041 |
|
|
/**
|
2042 |
|
|
* Creates an image with the specified width and height for use in
|
2043 |
|
|
* double buffering. Headless environments do not support images.
|
2044 |
|
|
*
|
2045 |
|
|
* @param width the width of the image
|
2046 |
|
|
* @param height the height of the image
|
2047 |
|
|
* @return the requested image, or null if it is not supported
|
2048 |
|
|
*/
|
2049 |
|
|
public Image createImage (int width, int height)
|
2050 |
|
|
{
|
2051 |
|
|
Image returnValue = null;
|
2052 |
|
|
if (!GraphicsEnvironment.isHeadless ())
|
2053 |
|
|
{
|
2054 |
|
|
if (isLightweight () && parent != null)
|
2055 |
|
|
returnValue = parent.createImage (width, height);
|
2056 |
|
|
else if (peer != null)
|
2057 |
|
|
returnValue = peer.createImage (width, height);
|
2058 |
|
|
}
|
2059 |
|
|
return returnValue;
|
2060 |
|
|
}
|
2061 |
|
|
|
2062 |
|
|
/**
|
2063 |
|
|
* Creates an image with the specified width and height for use in
|
2064 |
|
|
* double buffering. Headless environments do not support images.
|
2065 |
|
|
*
|
2066 |
|
|
* @param width the width of the image
|
2067 |
|
|
* @param height the height of the image
|
2068 |
|
|
* @return the requested image, or null if it is not supported
|
2069 |
|
|
* @since 1.4
|
2070 |
|
|
*/
|
2071 |
|
|
public VolatileImage createVolatileImage(int width, int height)
|
2072 |
|
|
{
|
2073 |
|
|
if (GraphicsEnvironment.isHeadless())
|
2074 |
|
|
return null;
|
2075 |
|
|
GraphicsConfiguration config = getGraphicsConfiguration();
|
2076 |
|
|
return config == null ? null
|
2077 |
|
|
: config.createCompatibleVolatileImage(width, height);
|
2078 |
|
|
}
|
2079 |
|
|
|
2080 |
|
|
/**
|
2081 |
|
|
* Creates an image with the specified width and height for use in
|
2082 |
|
|
* double buffering. Headless environments do not support images. The image
|
2083 |
|
|
* will support the specified capabilities.
|
2084 |
|
|
*
|
2085 |
|
|
* @param width the width of the image
|
2086 |
|
|
* @param height the height of the image
|
2087 |
|
|
* @param caps the requested capabilities
|
2088 |
|
|
* @return the requested image, or null if it is not supported
|
2089 |
|
|
* @throws AWTException if a buffer with the capabilities cannot be created
|
2090 |
|
|
* @since 1.4
|
2091 |
|
|
*/
|
2092 |
|
|
public VolatileImage createVolatileImage(int width, int height,
|
2093 |
|
|
ImageCapabilities caps)
|
2094 |
|
|
throws AWTException
|
2095 |
|
|
{
|
2096 |
|
|
if (GraphicsEnvironment.isHeadless())
|
2097 |
|
|
return null;
|
2098 |
|
|
GraphicsConfiguration config = getGraphicsConfiguration();
|
2099 |
|
|
return config == null ? null
|
2100 |
|
|
: config.createCompatibleVolatileImage(width, height, caps);
|
2101 |
|
|
}
|
2102 |
|
|
|
2103 |
|
|
/**
|
2104 |
|
|
* Prepares the specified image for rendering on this component.
|
2105 |
|
|
*
|
2106 |
|
|
* @param image the image to prepare for rendering
|
2107 |
|
|
* @param observer the observer to notify of image preparation status
|
2108 |
|
|
* @return true if the image is already fully prepared
|
2109 |
|
|
* @throws NullPointerException if image is null
|
2110 |
|
|
*/
|
2111 |
|
|
public boolean prepareImage(Image image, ImageObserver observer)
|
2112 |
|
|
{
|
2113 |
|
|
return prepareImage(image, image.getWidth(observer),
|
2114 |
|
|
image.getHeight(observer), observer);
|
2115 |
|
|
}
|
2116 |
|
|
|
2117 |
|
|
/**
|
2118 |
|
|
* Prepares the specified image for rendering on this component at the
|
2119 |
|
|
* specified scaled width and height
|
2120 |
|
|
*
|
2121 |
|
|
* @param image the image to prepare for rendering
|
2122 |
|
|
* @param width the scaled width of the image
|
2123 |
|
|
* @param height the scaled height of the image
|
2124 |
|
|
* @param observer the observer to notify of image preparation status
|
2125 |
|
|
* @return true if the image is already fully prepared
|
2126 |
|
|
*/
|
2127 |
|
|
public boolean prepareImage(Image image, int width, int height,
|
2128 |
|
|
ImageObserver observer)
|
2129 |
|
|
{
|
2130 |
|
|
if (peer != null)
|
2131 |
|
|
return peer.prepareImage(image, width, height, observer);
|
2132 |
|
|
else
|
2133 |
|
|
return getToolkit().prepareImage(image, width, height, observer);
|
2134 |
|
|
}
|
2135 |
|
|
|
2136 |
|
|
/**
|
2137 |
|
|
* Returns the status of the loading of the specified image. The value
|
2138 |
|
|
* returned will be those flags defined in <code>ImageObserver</code>.
|
2139 |
|
|
*
|
2140 |
|
|
* @param image the image to check on
|
2141 |
|
|
* @param observer the observer to notify of image loading progress
|
2142 |
|
|
* @return the image observer flags indicating the status of the load
|
2143 |
|
|
* @see #prepareImage(Image, int, int, ImageObserver)
|
2144 |
|
|
* @see Toolkit#checkImage(Image, int, int, ImageObserver)
|
2145 |
|
|
* @throws NullPointerException if image is null
|
2146 |
|
|
*/
|
2147 |
|
|
public int checkImage(Image image, ImageObserver observer)
|
2148 |
|
|
{
|
2149 |
|
|
return checkImage(image, -1, -1, observer);
|
2150 |
|
|
}
|
2151 |
|
|
|
2152 |
|
|
/**
|
2153 |
|
|
* Returns the status of the loading of the specified image. The value
|
2154 |
|
|
* returned will be those flags defined in <code>ImageObserver</code>.
|
2155 |
|
|
*
|
2156 |
|
|
* @param image the image to check on
|
2157 |
|
|
* @param width the scaled image width
|
2158 |
|
|
* @param height the scaled image height
|
2159 |
|
|
* @param observer the observer to notify of image loading progress
|
2160 |
|
|
* @return the image observer flags indicating the status of the load
|
2161 |
|
|
* @see #prepareImage(Image, int, int, ImageObserver)
|
2162 |
|
|
* @see Toolkit#checkImage(Image, int, int, ImageObserver)
|
2163 |
|
|
*/
|
2164 |
|
|
public int checkImage(Image image, int width, int height,
|
2165 |
|
|
ImageObserver observer)
|
2166 |
|
|
{
|
2167 |
|
|
if (peer != null)
|
2168 |
|
|
return peer.checkImage(image, width, height, observer);
|
2169 |
|
|
return getToolkit().checkImage(image, width, height, observer);
|
2170 |
|
|
}
|
2171 |
|
|
|
2172 |
|
|
/**
|
2173 |
|
|
* Sets whether paint messages delivered by the operating system should be
|
2174 |
|
|
* ignored. This does not affect messages from AWT, except for those
|
2175 |
|
|
* triggered by OS messages. Setting this to true can allow faster
|
2176 |
|
|
* performance in full-screen mode or page-flipping.
|
2177 |
|
|
*
|
2178 |
|
|
* @param ignoreRepaint the new setting for ignoring repaint events
|
2179 |
|
|
* @see #getIgnoreRepaint()
|
2180 |
|
|
* @see BufferStrategy
|
2181 |
|
|
* @see GraphicsDevice#setFullScreenWindow(Window)
|
2182 |
|
|
* @since 1.4
|
2183 |
|
|
*/
|
2184 |
|
|
public void setIgnoreRepaint(boolean ignoreRepaint)
|
2185 |
|
|
{
|
2186 |
|
|
this.ignoreRepaint = ignoreRepaint;
|
2187 |
|
|
}
|
2188 |
|
|
|
2189 |
|
|
/**
|
2190 |
|
|
* Test whether paint events from the operating system are ignored.
|
2191 |
|
|
*
|
2192 |
|
|
* @return the status of ignoring paint events
|
2193 |
|
|
* @see #setIgnoreRepaint(boolean)
|
2194 |
|
|
* @since 1.4
|
2195 |
|
|
*/
|
2196 |
|
|
public boolean getIgnoreRepaint()
|
2197 |
|
|
{
|
2198 |
|
|
return ignoreRepaint;
|
2199 |
|
|
}
|
2200 |
|
|
|
2201 |
|
|
/**
|
2202 |
|
|
* Tests whether or not the specified point is contained within this
|
2203 |
|
|
* component. Coordinates are relative to this component.
|
2204 |
|
|
*
|
2205 |
|
|
* @param x the X coordinate of the point to test
|
2206 |
|
|
* @param y the Y coordinate of the point to test
|
2207 |
|
|
* @return true if the point is within this component
|
2208 |
|
|
* @see #getComponentAt(int, int)
|
2209 |
|
|
*/
|
2210 |
|
|
public boolean contains(int x, int y)
|
2211 |
|
|
{
|
2212 |
|
|
return inside (x, y);
|
2213 |
|
|
}
|
2214 |
|
|
|
2215 |
|
|
/**
|
2216 |
|
|
* Tests whether or not the specified point is contained within this
|
2217 |
|
|
* component. Coordinates are relative to this component.
|
2218 |
|
|
*
|
2219 |
|
|
* @param x the X coordinate of the point to test
|
2220 |
|
|
* @param y the Y coordinate of the point to test
|
2221 |
|
|
* @return true if the point is within this component
|
2222 |
|
|
* @deprecated use {@link #contains(int, int)} instead
|
2223 |
|
|
*/
|
2224 |
|
|
public boolean inside(int x, int y)
|
2225 |
|
|
{
|
2226 |
|
|
return x >= 0 && y >= 0 && x < width && y < height;
|
2227 |
|
|
}
|
2228 |
|
|
|
2229 |
|
|
/**
|
2230 |
|
|
* Tests whether or not the specified point is contained within this
|
2231 |
|
|
* component. Coordinates are relative to this component.
|
2232 |
|
|
*
|
2233 |
|
|
* @param p the point to test
|
2234 |
|
|
* @return true if the point is within this component
|
2235 |
|
|
* @throws NullPointerException if p is null
|
2236 |
|
|
* @see #getComponentAt(Point)
|
2237 |
|
|
* @since 1.1
|
2238 |
|
|
*/
|
2239 |
|
|
public boolean contains(Point p)
|
2240 |
|
|
{
|
2241 |
|
|
return contains (p.x, p.y);
|
2242 |
|
|
}
|
2243 |
|
|
|
2244 |
|
|
/**
|
2245 |
|
|
* Returns the component occupying the position (x,y). This will either
|
2246 |
|
|
* be this component, an immediate child component, or <code>null</code>
|
2247 |
|
|
* if neither of the first two occupies the specified location.
|
2248 |
|
|
*
|
2249 |
|
|
* @param x the X coordinate to search for components at
|
2250 |
|
|
* @param y the Y coordinate to search for components at
|
2251 |
|
|
* @return the component at the specified location, or null
|
2252 |
|
|
* @see #contains(int, int)
|
2253 |
|
|
*/
|
2254 |
|
|
public Component getComponentAt(int x, int y)
|
2255 |
|
|
{
|
2256 |
|
|
return locate (x, y);
|
2257 |
|
|
}
|
2258 |
|
|
|
2259 |
|
|
/**
|
2260 |
|
|
* Returns the component occupying the position (x,y). This will either
|
2261 |
|
|
* be this component, an immediate child component, or <code>null</code>
|
2262 |
|
|
* if neither of the first two occupies the specified location.
|
2263 |
|
|
*
|
2264 |
|
|
* @param x the X coordinate to search for components at
|
2265 |
|
|
* @param y the Y coordinate to search for components at
|
2266 |
|
|
* @return the component at the specified location, or null
|
2267 |
|
|
* @deprecated use {@link #getComponentAt(int, int)} instead
|
2268 |
|
|
*/
|
2269 |
|
|
public Component locate(int x, int y)
|
2270 |
|
|
{
|
2271 |
|
|
return contains (x, y) ? this : null;
|
2272 |
|
|
}
|
2273 |
|
|
|
2274 |
|
|
/**
|
2275 |
|
|
* Returns the component occupying the position (x,y). This will either
|
2276 |
|
|
* be this component, an immediate child component, or <code>null</code>
|
2277 |
|
|
* if neither of the first two occupies the specified location.
|
2278 |
|
|
*
|
2279 |
|
|
* @param p the point to search for components at
|
2280 |
|
|
* @return the component at the specified location, or null
|
2281 |
|
|
* @throws NullPointerException if p is null
|
2282 |
|
|
* @see #contains(Point)
|
2283 |
|
|
* @since 1.1
|
2284 |
|
|
*/
|
2285 |
|
|
public Component getComponentAt(Point p)
|
2286 |
|
|
{
|
2287 |
|
|
return getComponentAt (p.x, p.y);
|
2288 |
|
|
}
|
2289 |
|
|
|
2290 |
|
|
/**
|
2291 |
|
|
* AWT 1.0 event delivery.
|
2292 |
|
|
*
|
2293 |
|
|
* Deliver an AWT 1.0 event to this Component. This method simply
|
2294 |
|
|
* calls {@link #postEvent}.
|
2295 |
|
|
*
|
2296 |
|
|
* @param e the event to deliver
|
2297 |
|
|
* @deprecated use {@link #dispatchEvent (AWTEvent)} instead
|
2298 |
|
|
*/
|
2299 |
|
|
public void deliverEvent (Event e)
|
2300 |
|
|
{
|
2301 |
|
|
postEvent (e);
|
2302 |
|
|
}
|
2303 |
|
|
|
2304 |
|
|
/**
|
2305 |
|
|
* Forwards AWT events to processEvent() if:<ul>
|
2306 |
|
|
* <li>Events have been enabled for this type of event via
|
2307 |
|
|
* <code>enableEvents()</code></li>,
|
2308 |
|
|
* <li>There is at least one registered listener for this type of event</li>
|
2309 |
|
|
* </ul>
|
2310 |
|
|
*
|
2311 |
|
|
* @param e the event to dispatch
|
2312 |
|
|
*/
|
2313 |
|
|
public final void dispatchEvent(AWTEvent e)
|
2314 |
|
|
{
|
2315 |
|
|
// Some subclasses in the AWT package need to override this behavior,
|
2316 |
|
|
// hence the use of dispatchEventImpl().
|
2317 |
|
|
dispatchEventImpl(e);
|
2318 |
|
|
}
|
2319 |
|
|
|
2320 |
|
|
/**
|
2321 |
|
|
* AWT 1.0 event handler.
|
2322 |
|
|
*
|
2323 |
|
|
* This method simply calls handleEvent and returns the result.
|
2324 |
|
|
*
|
2325 |
|
|
* @param e the event to handle
|
2326 |
|
|
* @return true if the event was handled, false otherwise
|
2327 |
|
|
* @deprecated use {@link #dispatchEvent(AWTEvent)} instead
|
2328 |
|
|
*/
|
2329 |
|
|
public boolean postEvent (Event e)
|
2330 |
|
|
{
|
2331 |
|
|
boolean handled = handleEvent (e);
|
2332 |
|
|
|
2333 |
|
|
if (!handled && getParent() != null)
|
2334 |
|
|
// FIXME: need to translate event coordinates to parent's
|
2335 |
|
|
// coordinate space.
|
2336 |
|
|
handled = getParent ().postEvent (e);
|
2337 |
|
|
|
2338 |
|
|
return handled;
|
2339 |
|
|
}
|
2340 |
|
|
|
2341 |
|
|
/**
|
2342 |
|
|
* Adds the specified listener to this component. This is harmless if the
|
2343 |
|
|
* listener is null, but if the listener has already been registered, it
|
2344 |
|
|
* will now be registered twice.
|
2345 |
|
|
*
|
2346 |
|
|
* @param listener the new listener to add
|
2347 |
|
|
* @see ComponentEvent
|
2348 |
|
|
* @see #removeComponentListener(ComponentListener)
|
2349 |
|
|
* @see #getComponentListeners()
|
2350 |
|
|
* @since 1.1
|
2351 |
|
|
*/
|
2352 |
|
|
public synchronized void addComponentListener(ComponentListener listener)
|
2353 |
|
|
{
|
2354 |
|
|
componentListener = AWTEventMulticaster.add(componentListener, listener);
|
2355 |
|
|
if (componentListener != null)
|
2356 |
|
|
enableEvents(AWTEvent.COMPONENT_EVENT_MASK);
|
2357 |
|
|
}
|
2358 |
|
|
|
2359 |
|
|
/**
|
2360 |
|
|
* Removes the specified listener from the component. This is harmless if
|
2361 |
|
|
* the listener was not previously registered.
|
2362 |
|
|
*
|
2363 |
|
|
* @param listener the listener to remove
|
2364 |
|
|
* @see ComponentEvent
|
2365 |
|
|
* @see #addComponentListener(ComponentListener)
|
2366 |
|
|
* @see #getComponentListeners()
|
2367 |
|
|
* @since 1.1
|
2368 |
|
|
*/
|
2369 |
|
|
public synchronized void removeComponentListener(ComponentListener listener)
|
2370 |
|
|
{
|
2371 |
|
|
componentListener = AWTEventMulticaster.remove(componentListener, listener);
|
2372 |
|
|
}
|
2373 |
|
|
|
2374 |
|
|
/**
|
2375 |
|
|
* Returns an array of all specified listeners registered on this component.
|
2376 |
|
|
*
|
2377 |
|
|
* @return an array of listeners
|
2378 |
|
|
* @see #addComponentListener(ComponentListener)
|
2379 |
|
|
* @see #removeComponentListener(ComponentListener)
|
2380 |
|
|
* @since 1.4
|
2381 |
|
|
*/
|
2382 |
|
|
public synchronized ComponentListener[] getComponentListeners()
|
2383 |
|
|
{
|
2384 |
|
|
return (ComponentListener[])
|
2385 |
|
|
AWTEventMulticaster.getListeners(componentListener,
|
2386 |
|
|
ComponentListener.class);
|
2387 |
|
|
}
|
2388 |
|
|
|
2389 |
|
|
/**
|
2390 |
|
|
* Adds the specified listener to this component. This is harmless if the
|
2391 |
|
|
* listener is null, but if the listener has already been registered, it
|
2392 |
|
|
* will now be registered twice.
|
2393 |
|
|
*
|
2394 |
|
|
* @param listener the new listener to add
|
2395 |
|
|
* @see FocusEvent
|
2396 |
|
|
* @see #removeFocusListener(FocusListener)
|
2397 |
|
|
* @see #getFocusListeners()
|
2398 |
|
|
* @since 1.1
|
2399 |
|
|
*/
|
2400 |
|
|
public synchronized void addFocusListener(FocusListener listener)
|
2401 |
|
|
{
|
2402 |
|
|
focusListener = AWTEventMulticaster.add(focusListener, listener);
|
2403 |
|
|
if (focusListener != null)
|
2404 |
|
|
enableEvents(AWTEvent.FOCUS_EVENT_MASK);
|
2405 |
|
|
}
|
2406 |
|
|
|
2407 |
|
|
/**
|
2408 |
|
|
* Removes the specified listener from the component. This is harmless if
|
2409 |
|
|
* the listener was not previously registered.
|
2410 |
|
|
*
|
2411 |
|
|
* @param listener the listener to remove
|
2412 |
|
|
* @see FocusEvent
|
2413 |
|
|
* @see #addFocusListener(FocusListener)
|
2414 |
|
|
* @see #getFocusListeners()
|
2415 |
|
|
* @since 1.1
|
2416 |
|
|
*/
|
2417 |
|
|
public synchronized void removeFocusListener(FocusListener listener)
|
2418 |
|
|
{
|
2419 |
|
|
focusListener = AWTEventMulticaster.remove(focusListener, listener);
|
2420 |
|
|
}
|
2421 |
|
|
|
2422 |
|
|
/**
|
2423 |
|
|
* Returns an array of all specified listeners registered on this component.
|
2424 |
|
|
*
|
2425 |
|
|
* @return an array of listeners
|
2426 |
|
|
* @see #addFocusListener(FocusListener)
|
2427 |
|
|
* @see #removeFocusListener(FocusListener)
|
2428 |
|
|
* @since 1.4
|
2429 |
|
|
*/
|
2430 |
|
|
public synchronized FocusListener[] getFocusListeners()
|
2431 |
|
|
{
|
2432 |
|
|
return (FocusListener[])
|
2433 |
|
|
AWTEventMulticaster.getListeners(focusListener, FocusListener.class);
|
2434 |
|
|
}
|
2435 |
|
|
|
2436 |
|
|
/**
|
2437 |
|
|
* Adds the specified listener to this component. This is harmless if the
|
2438 |
|
|
* listener is null, but if the listener has already been registered, it
|
2439 |
|
|
* will now be registered twice.
|
2440 |
|
|
*
|
2441 |
|
|
* @param listener the new listener to add
|
2442 |
|
|
* @see HierarchyEvent
|
2443 |
|
|
* @see #removeHierarchyListener(HierarchyListener)
|
2444 |
|
|
* @see #getHierarchyListeners()
|
2445 |
|
|
* @since 1.3
|
2446 |
|
|
*/
|
2447 |
|
|
public synchronized void addHierarchyListener(HierarchyListener listener)
|
2448 |
|
|
{
|
2449 |
|
|
hierarchyListener = AWTEventMulticaster.add(hierarchyListener, listener);
|
2450 |
|
|
if (hierarchyListener != null)
|
2451 |
|
|
enableEvents(AWTEvent.HIERARCHY_EVENT_MASK);
|
2452 |
|
|
}
|
2453 |
|
|
|
2454 |
|
|
/**
|
2455 |
|
|
* Removes the specified listener from the component. This is harmless if
|
2456 |
|
|
* the listener was not previously registered.
|
2457 |
|
|
*
|
2458 |
|
|
* @param listener the listener to remove
|
2459 |
|
|
* @see HierarchyEvent
|
2460 |
|
|
* @see #addHierarchyListener(HierarchyListener)
|
2461 |
|
|
* @see #getHierarchyListeners()
|
2462 |
|
|
* @since 1.3
|
2463 |
|
|
*/
|
2464 |
|
|
public synchronized void removeHierarchyListener(HierarchyListener listener)
|
2465 |
|
|
{
|
2466 |
|
|
hierarchyListener = AWTEventMulticaster.remove(hierarchyListener, listener);
|
2467 |
|
|
}
|
2468 |
|
|
|
2469 |
|
|
/**
|
2470 |
|
|
* Returns an array of all specified listeners registered on this component.
|
2471 |
|
|
*
|
2472 |
|
|
* @return an array of listeners
|
2473 |
|
|
* @see #addHierarchyListener(HierarchyListener)
|
2474 |
|
|
* @see #removeHierarchyListener(HierarchyListener)
|
2475 |
|
|
* @since 1.4
|
2476 |
|
|
*/
|
2477 |
|
|
public synchronized HierarchyListener[] getHierarchyListeners()
|
2478 |
|
|
{
|
2479 |
|
|
return (HierarchyListener[])
|
2480 |
|
|
AWTEventMulticaster.getListeners(hierarchyListener,
|
2481 |
|
|
HierarchyListener.class);
|
2482 |
|
|
}
|
2483 |
|
|
|
2484 |
|
|
/**
|
2485 |
|
|
* Adds the specified listener to this component. This is harmless if the
|
2486 |
|
|
* listener is null, but if the listener has already been registered, it
|
2487 |
|
|
* will now be registered twice.
|
2488 |
|
|
*
|
2489 |
|
|
* @param listener the new listener to add
|
2490 |
|
|
* @see HierarchyEvent
|
2491 |
|
|
* @see #removeHierarchyBoundsListener(HierarchyBoundsListener)
|
2492 |
|
|
* @see #getHierarchyBoundsListeners()
|
2493 |
|
|
* @since 1.3
|
2494 |
|
|
*/
|
2495 |
|
|
public synchronized void
|
2496 |
|
|
addHierarchyBoundsListener(HierarchyBoundsListener listener)
|
2497 |
|
|
{
|
2498 |
|
|
hierarchyBoundsListener =
|
2499 |
|
|
AWTEventMulticaster.add(hierarchyBoundsListener, listener);
|
2500 |
|
|
if (hierarchyBoundsListener != null)
|
2501 |
|
|
enableEvents(AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK);
|
2502 |
|
|
}
|
2503 |
|
|
|
2504 |
|
|
/**
|
2505 |
|
|
* Removes the specified listener from the component. This is harmless if
|
2506 |
|
|
* the listener was not previously registered.
|
2507 |
|
|
*
|
2508 |
|
|
* @param listener the listener to remove
|
2509 |
|
|
* @see HierarchyEvent
|
2510 |
|
|
* @see #addHierarchyBoundsListener(HierarchyBoundsListener)
|
2511 |
|
|
* @see #getHierarchyBoundsListeners()
|
2512 |
|
|
* @since 1.3
|
2513 |
|
|
*/
|
2514 |
|
|
public synchronized void
|
2515 |
|
|
removeHierarchyBoundsListener(HierarchyBoundsListener listener)
|
2516 |
|
|
{
|
2517 |
|
|
hierarchyBoundsListener =
|
2518 |
|
|
AWTEventMulticaster.remove(hierarchyBoundsListener, listener);
|
2519 |
|
|
}
|
2520 |
|
|
|
2521 |
|
|
/**
|
2522 |
|
|
* Returns an array of all specified listeners registered on this component.
|
2523 |
|
|
*
|
2524 |
|
|
* @return an array of listeners
|
2525 |
|
|
* @see #addHierarchyBoundsListener(HierarchyBoundsListener)
|
2526 |
|
|
* @see #removeHierarchyBoundsListener(HierarchyBoundsListener)
|
2527 |
|
|
* @since 1.4
|
2528 |
|
|
*/
|
2529 |
|
|
public synchronized HierarchyBoundsListener[] getHierarchyBoundsListeners()
|
2530 |
|
|
{
|
2531 |
|
|
return (HierarchyBoundsListener[])
|
2532 |
|
|
AWTEventMulticaster.getListeners(hierarchyBoundsListener,
|
2533 |
|
|
HierarchyBoundsListener.class);
|
2534 |
|
|
}
|
2535 |
|
|
|
2536 |
|
|
/**
|
2537 |
|
|
* Adds the specified listener to this component. This is harmless if the
|
2538 |
|
|
* listener is null, but if the listener has already been registered, it
|
2539 |
|
|
* will now be registered twice.
|
2540 |
|
|
*
|
2541 |
|
|
* @param listener the new listener to add
|
2542 |
|
|
* @see KeyEvent
|
2543 |
|
|
* @see #removeKeyListener(KeyListener)
|
2544 |
|
|
* @see #getKeyListeners()
|
2545 |
|
|
* @since 1.1
|
2546 |
|
|
*/
|
2547 |
|
|
public synchronized void addKeyListener(KeyListener listener)
|
2548 |
|
|
{
|
2549 |
|
|
keyListener = AWTEventMulticaster.add(keyListener, listener);
|
2550 |
|
|
if (keyListener != null)
|
2551 |
|
|
enableEvents(AWTEvent.KEY_EVENT_MASK);
|
2552 |
|
|
}
|
2553 |
|
|
|
2554 |
|
|
/**
|
2555 |
|
|
* Removes the specified listener from the component. This is harmless if
|
2556 |
|
|
* the listener was not previously registered.
|
2557 |
|
|
*
|
2558 |
|
|
* @param listener the listener to remove
|
2559 |
|
|
* @see KeyEvent
|
2560 |
|
|
* @see #addKeyListener(KeyListener)
|
2561 |
|
|
* @see #getKeyListeners()
|
2562 |
|
|
* @since 1.1
|
2563 |
|
|
*/
|
2564 |
|
|
public synchronized void removeKeyListener(KeyListener listener)
|
2565 |
|
|
{
|
2566 |
|
|
keyListener = AWTEventMulticaster.remove(keyListener, listener);
|
2567 |
|
|
}
|
2568 |
|
|
|
2569 |
|
|
/**
|
2570 |
|
|
* Returns an array of all specified listeners registered on this component.
|
2571 |
|
|
*
|
2572 |
|
|
* @return an array of listeners
|
2573 |
|
|
* @see #addKeyListener(KeyListener)
|
2574 |
|
|
* @see #removeKeyListener(KeyListener)
|
2575 |
|
|
* @since 1.4
|
2576 |
|
|
*/
|
2577 |
|
|
public synchronized KeyListener[] getKeyListeners()
|
2578 |
|
|
{
|
2579 |
|
|
return (KeyListener[])
|
2580 |
|
|
AWTEventMulticaster.getListeners(keyListener, KeyListener.class);
|
2581 |
|
|
}
|
2582 |
|
|
|
2583 |
|
|
/**
|
2584 |
|
|
* Adds the specified listener to this component. This is harmless if the
|
2585 |
|
|
* listener is null, but if the listener has already been registered, it
|
2586 |
|
|
* will now be registered twice.
|
2587 |
|
|
*
|
2588 |
|
|
* @param listener the new listener to add
|
2589 |
|
|
* @see MouseEvent
|
2590 |
|
|
* @see #removeMouseListener(MouseListener)
|
2591 |
|
|
* @see #getMouseListeners()
|
2592 |
|
|
* @since 1.1
|
2593 |
|
|
*/
|
2594 |
|
|
public synchronized void addMouseListener(MouseListener listener)
|
2595 |
|
|
{
|
2596 |
|
|
mouseListener = AWTEventMulticaster.add(mouseListener, listener);
|
2597 |
|
|
if (mouseListener != null)
|
2598 |
|
|
enableEvents(AWTEvent.MOUSE_EVENT_MASK);
|
2599 |
|
|
}
|
2600 |
|
|
|
2601 |
|
|
/**
|
2602 |
|
|
* Removes the specified listener from the component. This is harmless if
|
2603 |
|
|
* the listener was not previously registered.
|
2604 |
|
|
*
|
2605 |
|
|
* @param listener the listener to remove
|
2606 |
|
|
* @see MouseEvent
|
2607 |
|
|
* @see #addMouseListener(MouseListener)
|
2608 |
|
|
* @see #getMouseListeners()
|
2609 |
|
|
* @since 1.1
|
2610 |
|
|
*/
|
2611 |
|
|
public synchronized void removeMouseListener(MouseListener listener)
|
2612 |
|
|
{
|
2613 |
|
|
mouseListener = AWTEventMulticaster.remove(mouseListener, listener);
|
2614 |
|
|
}
|
2615 |
|
|
|
2616 |
|
|
/**
|
2617 |
|
|
* Returns an array of all specified listeners registered on this component.
|
2618 |
|
|
*
|
2619 |
|
|
* @return an array of listeners
|
2620 |
|
|
* @see #addMouseListener(MouseListener)
|
2621 |
|
|
* @see #removeMouseListener(MouseListener)
|
2622 |
|
|
* @since 1.4
|
2623 |
|
|
*/
|
2624 |
|
|
public synchronized MouseListener[] getMouseListeners()
|
2625 |
|
|
{
|
2626 |
|
|
return (MouseListener[])
|
2627 |
|
|
AWTEventMulticaster.getListeners(mouseListener, MouseListener.class);
|
2628 |
|
|
}
|
2629 |
|
|
|
2630 |
|
|
/**
|
2631 |
|
|
* Adds the specified listener to this component. This is harmless if the
|
2632 |
|
|
* listener is null, but if the listener has already been registered, it
|
2633 |
|
|
* will now be registered twice.
|
2634 |
|
|
*
|
2635 |
|
|
* @param listener the new listener to add
|
2636 |
|
|
* @see MouseEvent
|
2637 |
|
|
* @see #removeMouseMotionListener(MouseMotionListener)
|
2638 |
|
|
* @see #getMouseMotionListeners()
|
2639 |
|
|
* @since 1.1
|
2640 |
|
|
*/
|
2641 |
|
|
public synchronized void addMouseMotionListener(MouseMotionListener listener)
|
2642 |
|
|
{
|
2643 |
|
|
mouseMotionListener = AWTEventMulticaster.add(mouseMotionListener, listener);
|
2644 |
|
|
if (mouseMotionListener != null)
|
2645 |
|
|
enableEvents(AWTEvent.MOUSE_EVENT_MASK);
|
2646 |
|
|
}
|
2647 |
|
|
|
2648 |
|
|
/**
|
2649 |
|
|
* Removes the specified listener from the component. This is harmless if
|
2650 |
|
|
* the listener was not previously registered.
|
2651 |
|
|
*
|
2652 |
|
|
* @param listener the listener to remove
|
2653 |
|
|
* @see MouseEvent
|
2654 |
|
|
* @see #addMouseMotionListener(MouseMotionListener)
|
2655 |
|
|
* @see #getMouseMotionListeners()
|
2656 |
|
|
* @since 1.1
|
2657 |
|
|
*/
|
2658 |
|
|
public synchronized void removeMouseMotionListener(MouseMotionListener listener)
|
2659 |
|
|
{
|
2660 |
|
|
mouseMotionListener = AWTEventMulticaster.remove(mouseMotionListener, listener);
|
2661 |
|
|
}
|
2662 |
|
|
|
2663 |
|
|
/**
|
2664 |
|
|
* Returns an array of all specified listeners registered on this component.
|
2665 |
|
|
*
|
2666 |
|
|
* @return an array of listeners
|
2667 |
|
|
* @see #addMouseMotionListener(MouseMotionListener)
|
2668 |
|
|
* @see #removeMouseMotionListener(MouseMotionListener)
|
2669 |
|
|
* @since 1.4
|
2670 |
|
|
*/
|
2671 |
|
|
public synchronized MouseMotionListener[] getMouseMotionListeners()
|
2672 |
|
|
{
|
2673 |
|
|
return (MouseMotionListener[])
|
2674 |
|
|
AWTEventMulticaster.getListeners(mouseMotionListener,
|
2675 |
|
|
MouseMotionListener.class);
|
2676 |
|
|
}
|
2677 |
|
|
|
2678 |
|
|
/**
|
2679 |
|
|
* Adds the specified listener to this component. This is harmless if the
|
2680 |
|
|
* listener is null, but if the listener has already been registered, it
|
2681 |
|
|
* will now be registered twice.
|
2682 |
|
|
*
|
2683 |
|
|
* @param listener the new listener to add
|
2684 |
|
|
* @see MouseEvent
|
2685 |
|
|
* @see MouseWheelEvent
|
2686 |
|
|
* @see #removeMouseWheelListener(MouseWheelListener)
|
2687 |
|
|
* @see #getMouseWheelListeners()
|
2688 |
|
|
* @since 1.4
|
2689 |
|
|
*/
|
2690 |
|
|
public synchronized void addMouseWheelListener(MouseWheelListener listener)
|
2691 |
|
|
{
|
2692 |
|
|
mouseWheelListener = AWTEventMulticaster.add(mouseWheelListener, listener);
|
2693 |
|
|
if (mouseWheelListener != null)
|
2694 |
|
|
enableEvents(AWTEvent.MOUSE_WHEEL_EVENT_MASK);
|
2695 |
|
|
}
|
2696 |
|
|
|
2697 |
|
|
/**
|
2698 |
|
|
* Removes the specified listener from the component. This is harmless if
|
2699 |
|
|
* the listener was not previously registered.
|
2700 |
|
|
*
|
2701 |
|
|
* @param listener the listener to remove
|
2702 |
|
|
* @see MouseEvent
|
2703 |
|
|
* @see MouseWheelEvent
|
2704 |
|
|
* @see #addMouseWheelListener(MouseWheelListener)
|
2705 |
|
|
* @see #getMouseWheelListeners()
|
2706 |
|
|
* @since 1.4
|
2707 |
|
|
*/
|
2708 |
|
|
public synchronized void removeMouseWheelListener(MouseWheelListener listener)
|
2709 |
|
|
{
|
2710 |
|
|
mouseWheelListener = AWTEventMulticaster.remove(mouseWheelListener, listener);
|
2711 |
|
|
}
|
2712 |
|
|
|
2713 |
|
|
/**
|
2714 |
|
|
* Returns an array of all specified listeners registered on this component.
|
2715 |
|
|
*
|
2716 |
|
|
* @return an array of listeners
|
2717 |
|
|
* @see #addMouseWheelListener(MouseWheelListener)
|
2718 |
|
|
* @see #removeMouseWheelListener(MouseWheelListener)
|
2719 |
|
|
* @since 1.4
|
2720 |
|
|
*/
|
2721 |
|
|
public synchronized MouseWheelListener[] getMouseWheelListeners()
|
2722 |
|
|
{
|
2723 |
|
|
return (MouseWheelListener[])
|
2724 |
|
|
AWTEventMulticaster.getListeners(mouseWheelListener,
|
2725 |
|
|
MouseWheelListener.class);
|
2726 |
|
|
}
|
2727 |
|
|
|
2728 |
|
|
/**
|
2729 |
|
|
* Adds the specified listener to this component. This is harmless if the
|
2730 |
|
|
* listener is null, but if the listener has already been registered, it
|
2731 |
|
|
* will now be registered twice.
|
2732 |
|
|
*
|
2733 |
|
|
* @param listener the new listener to add
|
2734 |
|
|
* @see InputMethodEvent
|
2735 |
|
|
* @see #removeInputMethodListener(InputMethodListener)
|
2736 |
|
|
* @see #getInputMethodListeners()
|
2737 |
|
|
* @see #getInputMethodRequests()
|
2738 |
|
|
* @since 1.2
|
2739 |
|
|
*/
|
2740 |
|
|
public synchronized void addInputMethodListener(InputMethodListener listener)
|
2741 |
|
|
{
|
2742 |
|
|
inputMethodListener = AWTEventMulticaster.add(inputMethodListener, listener);
|
2743 |
|
|
if (inputMethodListener != null)
|
2744 |
|
|
enableEvents(AWTEvent.INPUT_METHOD_EVENT_MASK);
|
2745 |
|
|
}
|
2746 |
|
|
|
2747 |
|
|
/**
|
2748 |
|
|
* Removes the specified listener from the component. This is harmless if
|
2749 |
|
|
* the listener was not previously registered.
|
2750 |
|
|
*
|
2751 |
|
|
* @param listener the listener to remove
|
2752 |
|
|
* @see InputMethodEvent
|
2753 |
|
|
* @see #addInputMethodListener(InputMethodListener)
|
2754 |
|
|
* @see #getInputMethodRequests()
|
2755 |
|
|
* @since 1.2
|
2756 |
|
|
*/
|
2757 |
|
|
public synchronized void removeInputMethodListener(InputMethodListener listener)
|
2758 |
|
|
{
|
2759 |
|
|
inputMethodListener = AWTEventMulticaster.remove(inputMethodListener, listener);
|
2760 |
|
|
}
|
2761 |
|
|
|
2762 |
|
|
/**
|
2763 |
|
|
* Returns an array of all specified listeners registered on this component.
|
2764 |
|
|
*
|
2765 |
|
|
* @return an array of listeners
|
2766 |
|
|
* @see #addInputMethodListener(InputMethodListener)
|
2767 |
|
|
* @see #removeInputMethodListener(InputMethodListener)
|
2768 |
|
|
* @since 1.4
|
2769 |
|
|
*/
|
2770 |
|
|
public synchronized InputMethodListener[] getInputMethodListeners()
|
2771 |
|
|
{
|
2772 |
|
|
return (InputMethodListener[])
|
2773 |
|
|
AWTEventMulticaster.getListeners(inputMethodListener,
|
2774 |
|
|
InputMethodListener.class);
|
2775 |
|
|
}
|
2776 |
|
|
|
2777 |
|
|
/**
|
2778 |
|
|
* Returns all registered EventListers of the given listenerType.
|
2779 |
|
|
*
|
2780 |
|
|
* @param listenerType the class of listeners to filter
|
2781 |
|
|
* @return an array of registered listeners
|
2782 |
|
|
* @see #getComponentListeners()
|
2783 |
|
|
* @see #getFocusListeners()
|
2784 |
|
|
* @see #getHierarchyListeners()
|
2785 |
|
|
* @see #getHierarchyBoundsListeners()
|
2786 |
|
|
* @see #getKeyListeners()
|
2787 |
|
|
* @see #getMouseListeners()
|
2788 |
|
|
* @see #getMouseMotionListeners()
|
2789 |
|
|
* @see #getMouseWheelListeners()
|
2790 |
|
|
* @see #getInputMethodListeners()
|
2791 |
|
|
* @see #getPropertyChangeListeners()
|
2792 |
|
|
* @since 1.3
|
2793 |
|
|
*/
|
2794 |
|
|
public EventListener[] getListeners(Class listenerType)
|
2795 |
|
|
{
|
2796 |
|
|
if (listenerType == ComponentListener.class)
|
2797 |
|
|
return getComponentListeners();
|
2798 |
|
|
if (listenerType == FocusListener.class)
|
2799 |
|
|
return getFocusListeners();
|
2800 |
|
|
if (listenerType == HierarchyListener.class)
|
2801 |
|
|
return getHierarchyListeners();
|
2802 |
|
|
if (listenerType == HierarchyBoundsListener.class)
|
2803 |
|
|
return getHierarchyBoundsListeners();
|
2804 |
|
|
if (listenerType == KeyListener.class)
|
2805 |
|
|
return getKeyListeners();
|
2806 |
|
|
if (listenerType == MouseListener.class)
|
2807 |
|
|
return getMouseListeners();
|
2808 |
|
|
if (listenerType == MouseMotionListener.class)
|
2809 |
|
|
return getMouseMotionListeners();
|
2810 |
|
|
if (listenerType == MouseWheelListener.class)
|
2811 |
|
|
return getMouseWheelListeners();
|
2812 |
|
|
if (listenerType == InputMethodListener.class)
|
2813 |
|
|
return getInputMethodListeners();
|
2814 |
|
|
if (listenerType == PropertyChangeListener.class)
|
2815 |
|
|
return getPropertyChangeListeners();
|
2816 |
|
|
return (EventListener[]) Array.newInstance(listenerType, 0);
|
2817 |
|
|
}
|
2818 |
|
|
|
2819 |
|
|
/**
|
2820 |
|
|
* Returns the input method request handler, for subclasses which support
|
2821 |
|
|
* on-the-spot text input. By default, input methods are handled by AWT,
|
2822 |
|
|
* and this returns null.
|
2823 |
|
|
*
|
2824 |
|
|
* @return the input method handler, null by default
|
2825 |
|
|
* @since 1.2
|
2826 |
|
|
*/
|
2827 |
|
|
public InputMethodRequests getInputMethodRequests()
|
2828 |
|
|
{
|
2829 |
|
|
return null;
|
2830 |
|
|
}
|
2831 |
|
|
|
2832 |
|
|
/**
|
2833 |
|
|
* Gets the input context of this component, which is inherited from the
|
2834 |
|
|
* parent unless this is overridden.
|
2835 |
|
|
*
|
2836 |
|
|
* @return the text input context
|
2837 |
|
|
* @since 1.2
|
2838 |
|
|
*/
|
2839 |
|
|
public InputContext getInputContext()
|
2840 |
|
|
{
|
2841 |
|
|
return parent == null ? null : parent.getInputContext();
|
2842 |
|
|
}
|
2843 |
|
|
|
2844 |
|
|
/**
|
2845 |
|
|
* Enables the specified events. The events to enable are specified
|
2846 |
|
|
* by OR-ing together the desired masks from <code>AWTEvent</code>.
|
2847 |
|
|
*
|
2848 |
|
|
* <p>Events are enabled by default when a listener is attached to the
|
2849 |
|
|
* component for that event type. This method can be used by subclasses
|
2850 |
|
|
* to ensure the delivery of a specified event regardless of whether
|
2851 |
|
|
* or not a listener is attached.
|
2852 |
|
|
*
|
2853 |
|
|
* @param eventsToEnable the desired events to enable
|
2854 |
|
|
* @see #processEvent(AWTEvent)
|
2855 |
|
|
* @see #disableEvents(long)
|
2856 |
|
|
* @see AWTEvent
|
2857 |
|
|
* @since 1.1
|
2858 |
|
|
*/
|
2859 |
|
|
protected final void enableEvents(long eventsToEnable)
|
2860 |
|
|
{
|
2861 |
|
|
eventMask |= eventsToEnable;
|
2862 |
|
|
// TODO: Unlike Sun's implementation, I think we should try and
|
2863 |
|
|
// enable/disable events at the peer (gtk/X) level. This will avoid
|
2864 |
|
|
// clogging the event pipeline with useless mousemove events that
|
2865 |
|
|
// we arn't interested in, etc. This will involve extending the peer
|
2866 |
|
|
// interface, but thats okay because the peer interfaces have been
|
2867 |
|
|
// deprecated for a long time, and no longer feature in the
|
2868 |
|
|
// API specification at all.
|
2869 |
|
|
if (isLightweight() && parent != null)
|
2870 |
|
|
parent.enableEvents(eventsToEnable);
|
2871 |
|
|
else if (peer != null)
|
2872 |
|
|
peer.setEventMask(eventMask);
|
2873 |
|
|
}
|
2874 |
|
|
|
2875 |
|
|
/**
|
2876 |
|
|
* Disables the specified events. The events to disable are specified
|
2877 |
|
|
* by OR-ing together the desired masks from <code>AWTEvent</code>.
|
2878 |
|
|
*
|
2879 |
|
|
* @param eventsToDisable the desired events to disable
|
2880 |
|
|
* @see #enableEvents(long)
|
2881 |
|
|
* @since 1.1
|
2882 |
|
|
*/
|
2883 |
|
|
protected final void disableEvents(long eventsToDisable)
|
2884 |
|
|
{
|
2885 |
|
|
eventMask &= ~eventsToDisable;
|
2886 |
|
|
// forward new event mask to peer?
|
2887 |
|
|
}
|
2888 |
|
|
|
2889 |
|
|
/**
|
2890 |
|
|
* This is called by the EventQueue if two events with the same event id
|
2891 |
|
|
* and owner component are queued. Returns a new combined event, or null if
|
2892 |
|
|
* no combining is done. The coelesced events are currently mouse moves
|
2893 |
|
|
* (intermediate ones are discarded) and paint events (a merged paint is
|
2894 |
|
|
* created in place of the two events).
|
2895 |
|
|
*
|
2896 |
|
|
* @param existingEvent the event on the queue
|
2897 |
|
|
* @param newEvent the new event that might be entered on the queue
|
2898 |
|
|
* @return null if both events are kept, or the replacement coelesced event
|
2899 |
|
|
*/
|
2900 |
|
|
protected AWTEvent coalesceEvents(AWTEvent existingEvent, AWTEvent newEvent)
|
2901 |
|
|
{
|
2902 |
|
|
switch (existingEvent.id)
|
2903 |
|
|
{
|
2904 |
|
|
case MouseEvent.MOUSE_MOVED:
|
2905 |
|
|
case MouseEvent.MOUSE_DRAGGED:
|
2906 |
|
|
// Just drop the old (intermediate) event and return the new one.
|
2907 |
|
|
return newEvent;
|
2908 |
|
|
case PaintEvent.PAINT:
|
2909 |
|
|
case PaintEvent.UPDATE:
|
2910 |
|
|
return coalescePaintEvents((PaintEvent) existingEvent,
|
2911 |
|
|
(PaintEvent) newEvent);
|
2912 |
|
|
default:
|
2913 |
|
|
return null;
|
2914 |
|
|
}
|
2915 |
|
|
}
|
2916 |
|
|
|
2917 |
|
|
/**
|
2918 |
|
|
* Processes the specified event. In this class, this method simply
|
2919 |
|
|
* calls one of the more specific event handlers.
|
2920 |
|
|
*
|
2921 |
|
|
* @param e the event to process
|
2922 |
|
|
* @throws NullPointerException if e is null
|
2923 |
|
|
* @see #processComponentEvent(ComponentEvent)
|
2924 |
|
|
* @see #processFocusEvent(FocusEvent)
|
2925 |
|
|
* @see #processKeyEvent(KeyEvent)
|
2926 |
|
|
* @see #processMouseEvent(MouseEvent)
|
2927 |
|
|
* @see #processMouseMotionEvent(MouseEvent)
|
2928 |
|
|
* @see #processInputMethodEvent(InputMethodEvent)
|
2929 |
|
|
* @see #processHierarchyEvent(HierarchyEvent)
|
2930 |
|
|
* @see #processMouseWheelEvent(MouseWheelEvent)
|
2931 |
|
|
* @since 1.1
|
2932 |
|
|
*/
|
2933 |
|
|
protected void processEvent(AWTEvent e)
|
2934 |
|
|
{
|
2935 |
|
|
/* Note: the order of these if statements are
|
2936 |
|
|
important. Subclasses must be checked first. Eg. MouseEvent
|
2937 |
|
|
must be checked before ComponentEvent, since a MouseEvent
|
2938 |
|
|
object is also an instance of a ComponentEvent. */
|
2939 |
|
|
|
2940 |
|
|
if (e instanceof FocusEvent)
|
2941 |
|
|
processFocusEvent((FocusEvent) e);
|
2942 |
|
|
else if (e instanceof MouseWheelEvent)
|
2943 |
|
|
processMouseWheelEvent((MouseWheelEvent) e);
|
2944 |
|
|
else if (e instanceof MouseEvent)
|
2945 |
|
|
{
|
2946 |
|
|
if (e.id == MouseEvent.MOUSE_MOVED
|
2947 |
|
|
|| e.id == MouseEvent.MOUSE_DRAGGED)
|
2948 |
|
|
processMouseMotionEvent((MouseEvent) e);
|
2949 |
|
|
else
|
2950 |
|
|
processMouseEvent((MouseEvent) e);
|
2951 |
|
|
}
|
2952 |
|
|
else if (e instanceof KeyEvent)
|
2953 |
|
|
processKeyEvent((KeyEvent) e);
|
2954 |
|
|
else if (e instanceof InputMethodEvent)
|
2955 |
|
|
processInputMethodEvent((InputMethodEvent) e);
|
2956 |
|
|
else if (e instanceof ComponentEvent)
|
2957 |
|
|
processComponentEvent((ComponentEvent) e);
|
2958 |
|
|
else if (e instanceof HierarchyEvent)
|
2959 |
|
|
{
|
2960 |
|
|
if (e.id == HierarchyEvent.HIERARCHY_CHANGED)
|
2961 |
|
|
processHierarchyEvent((HierarchyEvent) e);
|
2962 |
|
|
else
|
2963 |
|
|
processHierarchyBoundsEvent((HierarchyEvent) e);
|
2964 |
|
|
}
|
2965 |
|
|
}
|
2966 |
|
|
|
2967 |
|
|
/**
|
2968 |
|
|
* Called when a component event is dispatched and component events are
|
2969 |
|
|
* enabled. This method passes the event along to any listeners
|
2970 |
|
|
* that are attached.
|
2971 |
|
|
*
|
2972 |
|
|
* @param e the <code>ComponentEvent</code> to process
|
2973 |
|
|
* @throws NullPointerException if e is null
|
2974 |
|
|
* @see ComponentListener
|
2975 |
|
|
* @see #addComponentListener(ComponentListener)
|
2976 |
|
|
* @see #enableEvents(long)
|
2977 |
|
|
* @since 1.1
|
2978 |
|
|
*/
|
2979 |
|
|
protected void processComponentEvent(ComponentEvent e)
|
2980 |
|
|
{
|
2981 |
|
|
if (componentListener == null)
|
2982 |
|
|
return;
|
2983 |
|
|
switch (e.id)
|
2984 |
|
|
{
|
2985 |
|
|
case ComponentEvent.COMPONENT_HIDDEN:
|
2986 |
|
|
componentListener.componentHidden(e);
|
2987 |
|
|
break;
|
2988 |
|
|
case ComponentEvent.COMPONENT_MOVED:
|
2989 |
|
|
componentListener.componentMoved(e);
|
2990 |
|
|
break;
|
2991 |
|
|
case ComponentEvent.COMPONENT_RESIZED:
|
2992 |
|
|
componentListener.componentResized(e);
|
2993 |
|
|
break;
|
2994 |
|
|
case ComponentEvent.COMPONENT_SHOWN:
|
2995 |
|
|
componentListener.componentShown(e);
|
2996 |
|
|
break;
|
2997 |
|
|
}
|
2998 |
|
|
}
|
2999 |
|
|
|
3000 |
|
|
/**
|
3001 |
|
|
* Called when a focus event is dispatched and component events are
|
3002 |
|
|
* enabled. This method passes the event along to any listeners
|
3003 |
|
|
* that are attached.
|
3004 |
|
|
*
|
3005 |
|
|
* @param e the <code>FocusEvent</code> to process
|
3006 |
|
|
* @throws NullPointerException if e is null
|
3007 |
|
|
* @see FocusListener
|
3008 |
|
|
* @see #addFocusListener(FocusListener)
|
3009 |
|
|
* @see #enableEvents(long)
|
3010 |
|
|
* @since 1.1
|
3011 |
|
|
*/
|
3012 |
|
|
protected void processFocusEvent(FocusEvent e)
|
3013 |
|
|
{
|
3014 |
|
|
if (focusListener == null)
|
3015 |
|
|
return;
|
3016 |
|
|
|
3017 |
|
|
switch (e.id)
|
3018 |
|
|
{
|
3019 |
|
|
case FocusEvent.FOCUS_GAINED:
|
3020 |
|
|
focusListener.focusGained(e);
|
3021 |
|
|
break;
|
3022 |
|
|
case FocusEvent.FOCUS_LOST:
|
3023 |
|
|
focusListener.focusLost(e);
|
3024 |
|
|
break;
|
3025 |
|
|
}
|
3026 |
|
|
}
|
3027 |
|
|
|
3028 |
|
|
/**
|
3029 |
|
|
* Called when a key event is dispatched and component events are
|
3030 |
|
|
* enabled. This method passes the event along to any listeners
|
3031 |
|
|
* that are attached.
|
3032 |
|
|
*
|
3033 |
|
|
* @param e the <code>KeyEvent</code> to process
|
3034 |
|
|
* @throws NullPointerException if e is null
|
3035 |
|
|
* @see KeyListener
|
3036 |
|
|
* @see #addKeyListener(KeyListener)
|
3037 |
|
|
* @see #enableEvents(long)
|
3038 |
|
|
* @since 1.1
|
3039 |
|
|
*/
|
3040 |
|
|
protected void processKeyEvent(KeyEvent e)
|
3041 |
|
|
{
|
3042 |
|
|
if (keyListener == null)
|
3043 |
|
|
return;
|
3044 |
|
|
switch (e.id)
|
3045 |
|
|
{
|
3046 |
|
|
case KeyEvent.KEY_PRESSED:
|
3047 |
|
|
keyListener.keyPressed(e);
|
3048 |
|
|
break;
|
3049 |
|
|
case KeyEvent.KEY_RELEASED:
|
3050 |
|
|
keyListener.keyReleased(e);
|
3051 |
|
|
break;
|
3052 |
|
|
case KeyEvent.KEY_TYPED:
|
3053 |
|
|
keyListener.keyTyped(e);
|
3054 |
|
|
break;
|
3055 |
|
|
}
|
3056 |
|
|
}
|
3057 |
|
|
|
3058 |
|
|
/**
|
3059 |
|
|
* Called when a regular mouse event is dispatched and component events are
|
3060 |
|
|
* enabled. This method passes the event along to any listeners
|
3061 |
|
|
* that are attached.
|
3062 |
|
|
*
|
3063 |
|
|
* @param e the <code>MouseEvent</code> to process
|
3064 |
|
|
* @throws NullPointerException if e is null
|
3065 |
|
|
* @see MouseListener
|
3066 |
|
|
* @see #addMouseListener(MouseListener)
|
3067 |
|
|
* @see #enableEvents(long)
|
3068 |
|
|
* @since 1.1
|
3069 |
|
|
*/
|
3070 |
|
|
protected void processMouseEvent(MouseEvent e)
|
3071 |
|
|
{
|
3072 |
|
|
if (mouseListener == null)
|
3073 |
|
|
return;
|
3074 |
|
|
switch (e.id)
|
3075 |
|
|
{
|
3076 |
|
|
case MouseEvent.MOUSE_CLICKED:
|
3077 |
|
|
mouseListener.mouseClicked(e);
|
3078 |
|
|
break;
|
3079 |
|
|
case MouseEvent.MOUSE_ENTERED:
|
3080 |
|
|
mouseListener.mouseEntered(e);
|
3081 |
|
|
break;
|
3082 |
|
|
case MouseEvent.MOUSE_EXITED:
|
3083 |
|
|
mouseListener.mouseExited(e);
|
3084 |
|
|
break;
|
3085 |
|
|
case MouseEvent.MOUSE_PRESSED:
|
3086 |
|
|
mouseListener.mousePressed(e);
|
3087 |
|
|
break;
|
3088 |
|
|
case MouseEvent.MOUSE_RELEASED:
|
3089 |
|
|
mouseListener.mouseReleased(e);
|
3090 |
|
|
break;
|
3091 |
|
|
}
|
3092 |
|
|
e.consume();
|
3093 |
|
|
}
|
3094 |
|
|
|
3095 |
|
|
/**
|
3096 |
|
|
* Called when a mouse motion event is dispatched and component events are
|
3097 |
|
|
* enabled. This method passes the event along to any listeners
|
3098 |
|
|
* that are attached.
|
3099 |
|
|
*
|
3100 |
|
|
* @param e the <code>MouseMotionEvent</code> to process
|
3101 |
|
|
* @throws NullPointerException if e is null
|
3102 |
|
|
* @see MouseMotionListener
|
3103 |
|
|
* @see #addMouseMotionListener(MouseMotionListener)
|
3104 |
|
|
* @see #enableEvents(long)
|
3105 |
|
|
* @since 1.1
|
3106 |
|
|
*/
|
3107 |
|
|
protected void processMouseMotionEvent(MouseEvent e)
|
3108 |
|
|
{
|
3109 |
|
|
if (mouseMotionListener == null)
|
3110 |
|
|
return;
|
3111 |
|
|
switch (e.id)
|
3112 |
|
|
{
|
3113 |
|
|
case MouseEvent.MOUSE_DRAGGED:
|
3114 |
|
|
mouseMotionListener.mouseDragged(e);
|
3115 |
|
|
break;
|
3116 |
|
|
case MouseEvent.MOUSE_MOVED:
|
3117 |
|
|
mouseMotionListener.mouseMoved(e);
|
3118 |
|
|
break;
|
3119 |
|
|
}
|
3120 |
|
|
e.consume();
|
3121 |
|
|
}
|
3122 |
|
|
|
3123 |
|
|
/**
|
3124 |
|
|
* Called when a mouse wheel event is dispatched and component events are
|
3125 |
|
|
* enabled. This method passes the event along to any listeners that are
|
3126 |
|
|
* attached.
|
3127 |
|
|
*
|
3128 |
|
|
* @param e the <code>MouseWheelEvent</code> to process
|
3129 |
|
|
* @throws NullPointerException if e is null
|
3130 |
|
|
* @see MouseWheelListener
|
3131 |
|
|
* @see #addMouseWheelListener(MouseWheelListener)
|
3132 |
|
|
* @see #enableEvents(long)
|
3133 |
|
|
* @since 1.4
|
3134 |
|
|
*/
|
3135 |
|
|
protected void processMouseWheelEvent(MouseWheelEvent e)
|
3136 |
|
|
{
|
3137 |
|
|
if (mouseWheelListener != null
|
3138 |
|
|
&& e.id == MouseEvent.MOUSE_WHEEL)
|
3139 |
|
|
{
|
3140 |
|
|
mouseWheelListener.mouseWheelMoved(e);
|
3141 |
|
|
e.consume();
|
3142 |
|
|
}
|
3143 |
|
|
}
|
3144 |
|
|
|
3145 |
|
|
/**
|
3146 |
|
|
* Called when an input method event is dispatched and component events are
|
3147 |
|
|
* enabled. This method passes the event along to any listeners that are
|
3148 |
|
|
* attached.
|
3149 |
|
|
*
|
3150 |
|
|
* @param e the <code>InputMethodEvent</code> to process
|
3151 |
|
|
* @throws NullPointerException if e is null
|
3152 |
|
|
* @see InputMethodListener
|
3153 |
|
|
* @see #addInputMethodListener(InputMethodListener)
|
3154 |
|
|
* @see #enableEvents(long)
|
3155 |
|
|
* @since 1.2
|
3156 |
|
|
*/
|
3157 |
|
|
protected void processInputMethodEvent(InputMethodEvent e)
|
3158 |
|
|
{
|
3159 |
|
|
if (inputMethodListener == null)
|
3160 |
|
|
return;
|
3161 |
|
|
switch (e.id)
|
3162 |
|
|
{
|
3163 |
|
|
case InputMethodEvent.CARET_POSITION_CHANGED:
|
3164 |
|
|
inputMethodListener.caretPositionChanged(e);
|
3165 |
|
|
break;
|
3166 |
|
|
case InputMethodEvent.INPUT_METHOD_TEXT_CHANGED:
|
3167 |
|
|
inputMethodListener.inputMethodTextChanged(e);
|
3168 |
|
|
break;
|
3169 |
|
|
}
|
3170 |
|
|
}
|
3171 |
|
|
|
3172 |
|
|
/**
|
3173 |
|
|
* Called when a hierarchy change event is dispatched and component events
|
3174 |
|
|
* are enabled. This method passes the event along to any listeners that are
|
3175 |
|
|
* attached.
|
3176 |
|
|
*
|
3177 |
|
|
* @param e the <code>HierarchyEvent</code> to process
|
3178 |
|
|
* @throws NullPointerException if e is null
|
3179 |
|
|
* @see HierarchyListener
|
3180 |
|
|
* @see #addHierarchyListener(HierarchyListener)
|
3181 |
|
|
* @see #enableEvents(long)
|
3182 |
|
|
* @since 1.3
|
3183 |
|
|
*/
|
3184 |
|
|
protected void processHierarchyEvent(HierarchyEvent e)
|
3185 |
|
|
{
|
3186 |
|
|
if (hierarchyListener == null)
|
3187 |
|
|
return;
|
3188 |
|
|
if (e.id == HierarchyEvent.HIERARCHY_CHANGED)
|
3189 |
|
|
hierarchyListener.hierarchyChanged(e);
|
3190 |
|
|
}
|
3191 |
|
|
|
3192 |
|
|
/**
|
3193 |
|
|
* Called when a hierarchy bounds event is dispatched and component events
|
3194 |
|
|
* are enabled. This method passes the event along to any listeners that are
|
3195 |
|
|
* attached.
|
3196 |
|
|
*
|
3197 |
|
|
* @param e the <code>HierarchyEvent</code> to process
|
3198 |
|
|
* @throws NullPointerException if e is null
|
3199 |
|
|
* @see HierarchyBoundsListener
|
3200 |
|
|
* @see #addHierarchyBoundsListener(HierarchyBoundsListener)
|
3201 |
|
|
* @see #enableEvents(long)
|
3202 |
|
|
* @since 1.3
|
3203 |
|
|
*/
|
3204 |
|
|
protected void processHierarchyBoundsEvent(HierarchyEvent e)
|
3205 |
|
|
{
|
3206 |
|
|
if (hierarchyBoundsListener == null)
|
3207 |
|
|
return;
|
3208 |
|
|
switch (e.id)
|
3209 |
|
|
{
|
3210 |
|
|
case HierarchyEvent.ANCESTOR_MOVED:
|
3211 |
|
|
hierarchyBoundsListener.ancestorMoved(e);
|
3212 |
|
|
break;
|
3213 |
|
|
case HierarchyEvent.ANCESTOR_RESIZED:
|
3214 |
|
|
hierarchyBoundsListener.ancestorResized(e);
|
3215 |
|
|
break;
|
3216 |
|
|
}
|
3217 |
|
|
}
|
3218 |
|
|
|
3219 |
|
|
/**
|
3220 |
|
|
* AWT 1.0 event handler.
|
3221 |
|
|
*
|
3222 |
|
|
* This method calls one of the event-specific handler methods. For
|
3223 |
|
|
* example for key events, either {@link #keyDown(Event,int)}
|
3224 |
|
|
* or {@link #keyUp(Event,int)} is called. A derived
|
3225 |
|
|
* component can override one of these event-specific methods if it
|
3226 |
|
|
* only needs to handle certain event types. Otherwise it can
|
3227 |
|
|
* override handleEvent itself and handle any event.
|
3228 |
|
|
*
|
3229 |
|
|
* @param evt the event to handle
|
3230 |
|
|
* @return true if the event was handled, false otherwise
|
3231 |
|
|
* @deprecated use {@link #processEvent(AWTEvent)} instead
|
3232 |
|
|
*/
|
3233 |
|
|
public boolean handleEvent (Event evt)
|
3234 |
|
|
{
|
3235 |
|
|
switch (evt.id)
|
3236 |
|
|
{
|
3237 |
|
|
// Handle key events.
|
3238 |
|
|
case Event.KEY_ACTION:
|
3239 |
|
|
case Event.KEY_PRESS:
|
3240 |
|
|
return keyDown (evt, evt.key);
|
3241 |
|
|
case Event.KEY_ACTION_RELEASE:
|
3242 |
|
|
case Event.KEY_RELEASE:
|
3243 |
|
|
return keyUp (evt, evt.key);
|
3244 |
|
|
|
3245 |
|
|
// Handle mouse events.
|
3246 |
|
|
case Event.MOUSE_DOWN:
|
3247 |
|
|
return mouseDown (evt, evt.x, evt.y);
|
3248 |
|
|
case Event.MOUSE_UP:
|
3249 |
|
|
return mouseUp (evt, evt.x, evt.y);
|
3250 |
|
|
case Event.MOUSE_MOVE:
|
3251 |
|
|
return mouseMove (evt, evt.x, evt.y);
|
3252 |
|
|
case Event.MOUSE_DRAG:
|
3253 |
|
|
return mouseDrag (evt, evt.x, evt.y);
|
3254 |
|
|
case Event.MOUSE_ENTER:
|
3255 |
|
|
return mouseEnter (evt, evt.x, evt.y);
|
3256 |
|
|
case Event.MOUSE_EXIT:
|
3257 |
|
|
return mouseExit (evt, evt.x, evt.y);
|
3258 |
|
|
|
3259 |
|
|
// Handle focus events.
|
3260 |
|
|
case Event.GOT_FOCUS:
|
3261 |
|
|
return gotFocus (evt, evt.arg);
|
3262 |
|
|
case Event.LOST_FOCUS:
|
3263 |
|
|
return lostFocus (evt, evt.arg);
|
3264 |
|
|
|
3265 |
|
|
// Handle action event.
|
3266 |
|
|
case Event.ACTION_EVENT:
|
3267 |
|
|
return action (evt, evt.arg);
|
3268 |
|
|
}
|
3269 |
|
|
// Unknown event.
|
3270 |
|
|
return false;
|
3271 |
|
|
}
|
3272 |
|
|
|
3273 |
|
|
/**
|
3274 |
|
|
* AWT 1.0 MOUSE_DOWN event handler. This method is meant to be
|
3275 |
|
|
* overridden by components providing their own MOUSE_DOWN handler.
|
3276 |
|
|
* The default implementation simply returns false.
|
3277 |
|
|
*
|
3278 |
|
|
* @param evt the event to handle
|
3279 |
|
|
* @param x the x coordinate, ignored
|
3280 |
|
|
* @param y the y coordinate, ignored
|
3281 |
|
|
* @return false
|
3282 |
|
|
* @deprecated use {@link #processMouseEvent(MouseEvent)} instead
|
3283 |
|
|
*/
|
3284 |
|
|
public boolean mouseDown(Event evt, int x, int y)
|
3285 |
|
|
{
|
3286 |
|
|
return false;
|
3287 |
|
|
}
|
3288 |
|
|
|
3289 |
|
|
/**
|
3290 |
|
|
* AWT 1.0 MOUSE_DRAG event handler. This method is meant to be
|
3291 |
|
|
* overridden by components providing their own MOUSE_DRAG handler.
|
3292 |
|
|
* The default implementation simply returns false.
|
3293 |
|
|
*
|
3294 |
|
|
* @param evt the event to handle
|
3295 |
|
|
* @param x the x coordinate, ignored
|
3296 |
|
|
* @param y the y coordinate, ignored
|
3297 |
|
|
* @return false
|
3298 |
|
|
* @deprecated use {@link #processMouseMotionEvent(MouseEvent)} instead
|
3299 |
|
|
*/
|
3300 |
|
|
public boolean mouseDrag(Event evt, int x, int y)
|
3301 |
|
|
{
|
3302 |
|
|
return false;
|
3303 |
|
|
}
|
3304 |
|
|
|
3305 |
|
|
/**
|
3306 |
|
|
* AWT 1.0 MOUSE_UP event handler. This method is meant to be
|
3307 |
|
|
* overridden by components providing their own MOUSE_UP handler.
|
3308 |
|
|
* The default implementation simply returns false.
|
3309 |
|
|
*
|
3310 |
|
|
* @param evt the event to handle
|
3311 |
|
|
* @param x the x coordinate, ignored
|
3312 |
|
|
* @param y the y coordinate, ignored
|
3313 |
|
|
* @return false
|
3314 |
|
|
* @deprecated use {@link #processMouseEvent(MouseEvent)} instead
|
3315 |
|
|
*/
|
3316 |
|
|
public boolean mouseUp(Event evt, int x, int y)
|
3317 |
|
|
{
|
3318 |
|
|
return false;
|
3319 |
|
|
}
|
3320 |
|
|
|
3321 |
|
|
/**
|
3322 |
|
|
* AWT 1.0 MOUSE_MOVE event handler. This method is meant to be
|
3323 |
|
|
* overridden by components providing their own MOUSE_MOVE handler.
|
3324 |
|
|
* The default implementation simply returns false.
|
3325 |
|
|
*
|
3326 |
|
|
* @param evt the event to handle
|
3327 |
|
|
* @param x the x coordinate, ignored
|
3328 |
|
|
* @param y the y coordinate, ignored
|
3329 |
|
|
* @return false
|
3330 |
|
|
* @deprecated use {@link #processMouseMotionEvent(MouseEvent)} instead
|
3331 |
|
|
*/
|
3332 |
|
|
public boolean mouseMove(Event evt, int x, int y)
|
3333 |
|
|
{
|
3334 |
|
|
return false;
|
3335 |
|
|
}
|
3336 |
|
|
|
3337 |
|
|
/**
|
3338 |
|
|
* AWT 1.0 MOUSE_ENTER event handler. This method is meant to be
|
3339 |
|
|
* overridden by components providing their own MOUSE_ENTER handler.
|
3340 |
|
|
* The default implementation simply returns false.
|
3341 |
|
|
*
|
3342 |
|
|
* @param evt the event to handle
|
3343 |
|
|
* @param x the x coordinate, ignored
|
3344 |
|
|
* @param y the y coordinate, ignored
|
3345 |
|
|
* @return false
|
3346 |
|
|
* @deprecated use {@link #processMouseEvent(MouseEvent)} instead
|
3347 |
|
|
*/
|
3348 |
|
|
public boolean mouseEnter(Event evt, int x, int y)
|
3349 |
|
|
{
|
3350 |
|
|
return false;
|
3351 |
|
|
}
|
3352 |
|
|
|
3353 |
|
|
/**
|
3354 |
|
|
* AWT 1.0 MOUSE_EXIT event handler. This method is meant to be
|
3355 |
|
|
* overridden by components providing their own MOUSE_EXIT handler.
|
3356 |
|
|
* The default implementation simply returns false.
|
3357 |
|
|
*
|
3358 |
|
|
* @param evt the event to handle
|
3359 |
|
|
* @param x the x coordinate, ignored
|
3360 |
|
|
* @param y the y coordinate, ignored
|
3361 |
|
|
* @return false
|
3362 |
|
|
* @deprecated use {@link #processMouseEvent(MouseEvent)} instead
|
3363 |
|
|
*/
|
3364 |
|
|
public boolean mouseExit(Event evt, int x, int y)
|
3365 |
|
|
{
|
3366 |
|
|
return false;
|
3367 |
|
|
}
|
3368 |
|
|
|
3369 |
|
|
/**
|
3370 |
|
|
* AWT 1.0 KEY_PRESS and KEY_ACTION event handler. This method is
|
3371 |
|
|
* meant to be overridden by components providing their own key
|
3372 |
|
|
* press handler. The default implementation simply returns false.
|
3373 |
|
|
*
|
3374 |
|
|
* @param evt the event to handle
|
3375 |
|
|
* @param key the key pressed, ignored
|
3376 |
|
|
* @return false
|
3377 |
|
|
* @deprecated use {@link #processKeyEvent(KeyEvent)} instead
|
3378 |
|
|
*/
|
3379 |
|
|
public boolean keyDown(Event evt, int key)
|
3380 |
|
|
{
|
3381 |
|
|
return false;
|
3382 |
|
|
}
|
3383 |
|
|
|
3384 |
|
|
/**
|
3385 |
|
|
* AWT 1.0 KEY_RELEASE and KEY_ACTION_RELEASE event handler. This
|
3386 |
|
|
* method is meant to be overridden by components providing their
|
3387 |
|
|
* own key release handler. The default implementation simply
|
3388 |
|
|
* returns false.
|
3389 |
|
|
*
|
3390 |
|
|
* @param evt the event to handle
|
3391 |
|
|
* @param key the key pressed, ignored
|
3392 |
|
|
* @return false
|
3393 |
|
|
* @deprecated use {@link #processKeyEvent(KeyEvent)} instead
|
3394 |
|
|
*/
|
3395 |
|
|
public boolean keyUp(Event evt, int key)
|
3396 |
|
|
{
|
3397 |
|
|
return false;
|
3398 |
|
|
}
|
3399 |
|
|
|
3400 |
|
|
/**
|
3401 |
|
|
* AWT 1.0 ACTION_EVENT event handler. This method is meant to be
|
3402 |
|
|
* overridden by components providing their own action event
|
3403 |
|
|
* handler. The default implementation simply returns false.
|
3404 |
|
|
*
|
3405 |
|
|
* @param evt the event to handle
|
3406 |
|
|
* @param what the object acted on, ignored
|
3407 |
|
|
* @return false
|
3408 |
|
|
* @deprecated in classes which support actions, use
|
3409 |
|
|
* <code>processActionEvent(ActionEvent)</code> instead
|
3410 |
|
|
*/
|
3411 |
|
|
public boolean action(Event evt, Object what)
|
3412 |
|
|
{
|
3413 |
|
|
return false;
|
3414 |
|
|
}
|
3415 |
|
|
|
3416 |
|
|
/**
|
3417 |
|
|
* Called to inform this component it has been added to a container.
|
3418 |
|
|
* A native peer - if any - is created at this time. This method is
|
3419 |
|
|
* called automatically by the AWT system and should not be called by
|
3420 |
|
|
* user level code.
|
3421 |
|
|
*
|
3422 |
|
|
* @see #isDisplayable()
|
3423 |
|
|
* @see #removeNotify()
|
3424 |
|
|
*/
|
3425 |
|
|
public void addNotify()
|
3426 |
|
|
{
|
3427 |
|
|
if (peer == null)
|
3428 |
|
|
peer = getToolkit().createComponent(this);
|
3429 |
|
|
/* Now that all the children has gotten their peers, we should
|
3430 |
|
|
have the event mask needed for this component and its
|
3431 |
|
|
lightweight subcomponents. */
|
3432 |
|
|
peer.setEventMask(eventMask);
|
3433 |
|
|
/* We do not invalidate here, but rather leave that job up to
|
3434 |
|
|
the peer. For efficiency, the peer can choose not to
|
3435 |
|
|
invalidate if it is happy with the current dimensions,
|
3436 |
|
|
etc. */
|
3437 |
|
|
}
|
3438 |
|
|
|
3439 |
|
|
/**
|
3440 |
|
|
* Called to inform this component is has been removed from its
|
3441 |
|
|
* container. Its native peer - if any - is destroyed at this time.
|
3442 |
|
|
* This method is called automatically by the AWT system and should
|
3443 |
|
|
* not be called by user level code.
|
3444 |
|
|
*
|
3445 |
|
|
* @see #isDisplayable()
|
3446 |
|
|
* @see #addNotify()
|
3447 |
|
|
*/
|
3448 |
|
|
public void removeNotify()
|
3449 |
|
|
{
|
3450 |
|
|
// We null our peer field before disposing of it, such that if we're
|
3451 |
|
|
// not the event dispatch thread and the dispatch thread is awoken by
|
3452 |
|
|
// the dispose call, there will be no race checking the peer's null
|
3453 |
|
|
// status.
|
3454 |
|
|
|
3455 |
|
|
ComponentPeer tmp = peer;
|
3456 |
|
|
peer = null;
|
3457 |
|
|
if (tmp != null)
|
3458 |
|
|
{
|
3459 |
|
|
tmp.hide();
|
3460 |
|
|
tmp.dispose();
|
3461 |
|
|
}
|
3462 |
|
|
}
|
3463 |
|
|
|
3464 |
|
|
/**
|
3465 |
|
|
* AWT 1.0 GOT_FOCUS event handler. This method is meant to be
|
3466 |
|
|
* overridden by components providing their own GOT_FOCUS handler.
|
3467 |
|
|
* The default implementation simply returns false.
|
3468 |
|
|
*
|
3469 |
|
|
* @param evt the event to handle
|
3470 |
|
|
* @param what the Object focused, ignored
|
3471 |
|
|
* @return false
|
3472 |
|
|
* @deprecated use {@link #processFocusEvent(FocusEvent)} instead
|
3473 |
|
|
*/
|
3474 |
|
|
public boolean gotFocus(Event evt, Object what)
|
3475 |
|
|
{
|
3476 |
|
|
return false;
|
3477 |
|
|
}
|
3478 |
|
|
|
3479 |
|
|
/**
|
3480 |
|
|
* AWT 1.0 LOST_FOCUS event handler. This method is meant to be
|
3481 |
|
|
* overridden by components providing their own LOST_FOCUS handler.
|
3482 |
|
|
* The default implementation simply returns false.
|
3483 |
|
|
*
|
3484 |
|
|
* @param evt the event to handle
|
3485 |
|
|
* @param what the Object focused, ignored
|
3486 |
|
|
* @return false
|
3487 |
|
|
* @deprecated use {@link #processFocusEvent(FocusEvent)} instead
|
3488 |
|
|
*/
|
3489 |
|
|
public boolean lostFocus(Event evt, Object what)
|
3490 |
|
|
{
|
3491 |
|
|
return false;
|
3492 |
|
|
}
|
3493 |
|
|
|
3494 |
|
|
/**
|
3495 |
|
|
* Tests whether or not this component is in the group that can be
|
3496 |
|
|
* traversed using the keyboard traversal mechanism (such as the TAB key).
|
3497 |
|
|
*
|
3498 |
|
|
* @return true if the component is traversed via the TAB key
|
3499 |
|
|
* @see #setFocusable(boolean)
|
3500 |
|
|
* @since 1.1
|
3501 |
|
|
* @deprecated use {@link #isFocusable()} instead
|
3502 |
|
|
*/
|
3503 |
|
|
public boolean isFocusTraversable()
|
3504 |
|
|
{
|
3505 |
|
|
return enabled && visible && (peer == null || isLightweight() || peer.isFocusTraversable());
|
3506 |
|
|
}
|
3507 |
|
|
|
3508 |
|
|
/**
|
3509 |
|
|
* Tests if this component can receive focus.
|
3510 |
|
|
*
|
3511 |
|
|
* @return true if this component can receive focus
|
3512 |
|
|
* @since 1.4
|
3513 |
|
|
*/
|
3514 |
|
|
public boolean isFocusable()
|
3515 |
|
|
{
|
3516 |
|
|
return focusable;
|
3517 |
|
|
}
|
3518 |
|
|
|
3519 |
|
|
/**
|
3520 |
|
|
* Specify whether this component can receive focus. This method also
|
3521 |
|
|
* sets the {@link #isFocusTraversableOverridden} field to 1, which
|
3522 |
|
|
* appears to be the undocumented way {@link
|
3523 |
|
|
* DefaultFocusTraversalPolicy#accept(Component)} determines whether to
|
3524 |
|
|
* respect the {@link #isFocusable()} method of the component.
|
3525 |
|
|
*
|
3526 |
|
|
* @param focusable the new focusable status
|
3527 |
|
|
* @since 1.4
|
3528 |
|
|
*/
|
3529 |
|
|
public void setFocusable(boolean focusable)
|
3530 |
|
|
{
|
3531 |
|
|
firePropertyChange("focusable", this.focusable, focusable);
|
3532 |
|
|
this.focusable = focusable;
|
3533 |
|
|
this.isFocusTraversableOverridden = 1;
|
3534 |
|
|
}
|
3535 |
|
|
|
3536 |
|
|
/**
|
3537 |
|
|
* Sets the focus traversal keys for one of the three focus
|
3538 |
|
|
* traversal directions supported by Components:
|
3539 |
|
|
* {@link KeyboardFocusManager#FORWARD_TRAVERSAL_KEYS},
|
3540 |
|
|
* {@link KeyboardFocusManager#BACKWARD_TRAVERSAL_KEYS}, or
|
3541 |
|
|
* {@link KeyboardFocusManager#UP_CYCLE_TRAVERSAL_KEYS}. Normally, the
|
3542 |
|
|
* default values should match the operating system's native
|
3543 |
|
|
* choices. To disable a given traversal, use
|
3544 |
|
|
* <code>Collections.EMPTY_SET</code>. The event dispatcher will
|
3545 |
|
|
* consume PRESSED, RELEASED, and TYPED events for the specified
|
3546 |
|
|
* key, although focus can only transfer on PRESSED or RELEASED.
|
3547 |
|
|
*
|
3548 |
|
|
* <p>The defaults are:
|
3549 |
|
|
* <table>
|
3550 |
|
|
* <th><td>Identifier</td><td>Meaning</td><td>Default</td></th>
|
3551 |
|
|
* <tr><td>KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS</td>
|
3552 |
|
|
* <td>Normal forward traversal</td>
|
3553 |
|
|
* <td>TAB on KEY_PRESSED, Ctrl-TAB on KEY_PRESSED</td></tr>
|
3554 |
|
|
* <tr><td>KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS</td>
|
3555 |
|
|
* <td>Normal backward traversal</td>
|
3556 |
|
|
* <td>Shift-TAB on KEY_PRESSED, Ctrl-Shift-TAB on KEY_PRESSED</td></tr>
|
3557 |
|
|
* <tr><td>KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS</td>
|
3558 |
|
|
* <td>Go up a traversal cycle</td><td>None</td></tr>
|
3559 |
|
|
* </table>
|
3560 |
|
|
*
|
3561 |
|
|
* If keystrokes is null, this component's focus traversal key set
|
3562 |
|
|
* is inherited from one of its ancestors. If none of its ancestors
|
3563 |
|
|
* has its own set of focus traversal keys, the focus traversal keys
|
3564 |
|
|
* are set to the defaults retrieved from the current
|
3565 |
|
|
* KeyboardFocusManager. If not null, the set must contain only
|
3566 |
|
|
* AWTKeyStrokes that are not already focus keys and are not
|
3567 |
|
|
* KEY_TYPED events.
|
3568 |
|
|
*
|
3569 |
|
|
* @param id one of FORWARD_TRAVERSAL_KEYS, BACKWARD_TRAVERSAL_KEYS, or
|
3570 |
|
|
* UP_CYCLE_TRAVERSAL_KEYS
|
3571 |
|
|
* @param keystrokes a set of keys, or null
|
3572 |
|
|
* @throws IllegalArgumentException if id or keystrokes is invalid
|
3573 |
|
|
* @see #getFocusTraversalKeys(int)
|
3574 |
|
|
* @see KeyboardFocusManager#FORWARD_TRAVERSAL_KEYS
|
3575 |
|
|
* @see KeyboardFocusManager#BACKWARD_TRAVERSAL_KEYS
|
3576 |
|
|
* @see KeyboardFocusManager#UP_CYCLE_TRAVERSAL_KEYS
|
3577 |
|
|
* @since 1.4
|
3578 |
|
|
*/
|
3579 |
|
|
public void setFocusTraversalKeys(int id, Set keystrokes)
|
3580 |
|
|
{
|
3581 |
|
|
if (keystrokes == null)
|
3582 |
|
|
{
|
3583 |
|
|
Container parent = getParent ();
|
3584 |
|
|
|
3585 |
|
|
while (parent != null)
|
3586 |
|
|
{
|
3587 |
|
|
if (parent.areFocusTraversalKeysSet (id))
|
3588 |
|
|
{
|
3589 |
|
|
keystrokes = parent.getFocusTraversalKeys (id);
|
3590 |
|
|
break;
|
3591 |
|
|
}
|
3592 |
|
|
parent = parent.getParent ();
|
3593 |
|
|
}
|
3594 |
|
|
|
3595 |
|
|
if (keystrokes == null)
|
3596 |
|
|
keystrokes = KeyboardFocusManager.getCurrentKeyboardFocusManager ().
|
3597 |
|
|
getDefaultFocusTraversalKeys (id);
|
3598 |
|
|
}
|
3599 |
|
|
|
3600 |
|
|
Set sa;
|
3601 |
|
|
Set sb;
|
3602 |
|
|
String name;
|
3603 |
|
|
switch (id)
|
3604 |
|
|
{
|
3605 |
|
|
case KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS:
|
3606 |
|
|
sa = getFocusTraversalKeys
|
3607 |
|
|
(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS);
|
3608 |
|
|
sb = getFocusTraversalKeys
|
3609 |
|
|
(KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS);
|
3610 |
|
|
name = "forwardFocusTraversalKeys";
|
3611 |
|
|
break;
|
3612 |
|
|
case KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS:
|
3613 |
|
|
sa = getFocusTraversalKeys
|
3614 |
|
|
(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS);
|
3615 |
|
|
sb = getFocusTraversalKeys
|
3616 |
|
|
(KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS);
|
3617 |
|
|
name = "backwardFocusTraversalKeys";
|
3618 |
|
|
break;
|
3619 |
|
|
case KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS:
|
3620 |
|
|
sa = getFocusTraversalKeys
|
3621 |
|
|
(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS);
|
3622 |
|
|
sb = getFocusTraversalKeys
|
3623 |
|
|
(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS);
|
3624 |
|
|
name = "upCycleFocusTraversalKeys";
|
3625 |
|
|
break;
|
3626 |
|
|
default:
|
3627 |
|
|
throw new IllegalArgumentException ();
|
3628 |
|
|
}
|
3629 |
|
|
|
3630 |
|
|
int i = keystrokes.size ();
|
3631 |
|
|
Iterator iter = keystrokes.iterator ();
|
3632 |
|
|
|
3633 |
|
|
while (--i >= 0)
|
3634 |
|
|
{
|
3635 |
|
|
Object o = iter.next ();
|
3636 |
|
|
if (!(o instanceof AWTKeyStroke)
|
3637 |
|
|
|| sa.contains (o) || sb.contains (o)
|
3638 |
|
|
|| ((AWTKeyStroke) o).keyCode == KeyEvent.VK_UNDEFINED)
|
3639 |
|
|
throw new IllegalArgumentException ();
|
3640 |
|
|
}
|
3641 |
|
|
|
3642 |
|
|
if (focusTraversalKeys == null)
|
3643 |
|
|
focusTraversalKeys = new Set[3];
|
3644 |
|
|
|
3645 |
|
|
keystrokes = Collections.unmodifiableSet (new HashSet (keystrokes));
|
3646 |
|
|
firePropertyChange (name, focusTraversalKeys[id], keystrokes);
|
3647 |
|
|
|
3648 |
|
|
focusTraversalKeys[id] = keystrokes;
|
3649 |
|
|
}
|
3650 |
|
|
|
3651 |
|
|
/**
|
3652 |
|
|
* Returns the set of keys for a given focus traversal action, as
|
3653 |
|
|
* defined in <code>setFocusTraversalKeys</code>. If not set, this
|
3654 |
|
|
* is inherited from the parent component, which may have gotten it
|
3655 |
|
|
* from the KeyboardFocusManager.
|
3656 |
|
|
*
|
3657 |
|
|
* @param id one of FORWARD_TRAVERSAL_KEYS, BACKWARD_TRAVERSAL_KEYS,
|
3658 |
|
|
* or UP_CYCLE_TRAVERSAL_KEYS
|
3659 |
|
|
*
|
3660 |
|
|
* @return set of traversal keys
|
3661 |
|
|
*
|
3662 |
|
|
* @throws IllegalArgumentException if id is invalid
|
3663 |
|
|
*
|
3664 |
|
|
* @see #setFocusTraversalKeys (int, Set)
|
3665 |
|
|
* @see KeyboardFocusManager#FORWARD_TRAVERSAL_KEYS
|
3666 |
|
|
* @see KeyboardFocusManager#BACKWARD_TRAVERSAL_KEYS
|
3667 |
|
|
* @see KeyboardFocusManager#UP_CYCLE_TRAVERSAL_KEYS
|
3668 |
|
|
*
|
3669 |
|
|
* @since 1.4
|
3670 |
|
|
*/
|
3671 |
|
|
public Set getFocusTraversalKeys (int id)
|
3672 |
|
|
{
|
3673 |
|
|
if (id != KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS &&
|
3674 |
|
|
id != KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS &&
|
3675 |
|
|
id != KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS)
|
3676 |
|
|
throw new IllegalArgumentException();
|
3677 |
|
|
|
3678 |
|
|
Set s = null;
|
3679 |
|
|
|
3680 |
|
|
if (focusTraversalKeys != null)
|
3681 |
|
|
s = focusTraversalKeys[id];
|
3682 |
|
|
|
3683 |
|
|
if (s == null && parent != null)
|
3684 |
|
|
s = parent.getFocusTraversalKeys (id);
|
3685 |
|
|
|
3686 |
|
|
return s == null ? (KeyboardFocusManager.getCurrentKeyboardFocusManager()
|
3687 |
|
|
.getDefaultFocusTraversalKeys(id)) : s;
|
3688 |
|
|
}
|
3689 |
|
|
|
3690 |
|
|
/**
|
3691 |
|
|
* Tests whether the focus traversal keys for a given action are explicitly
|
3692 |
|
|
* set or inherited.
|
3693 |
|
|
*
|
3694 |
|
|
* @param id one of FORWARD_TRAVERSAL_KEYS, BACKWARD_TRAVERSAL_KEYS,
|
3695 |
|
|
* or UP_CYCLE_TRAVERSAL_KEYS
|
3696 |
|
|
* @return true if that set is explicitly specified
|
3697 |
|
|
* @throws IllegalArgumentException if id is invalid
|
3698 |
|
|
* @see #getFocusTraversalKeys (int)
|
3699 |
|
|
* @see KeyboardFocusManager#FORWARD_TRAVERSAL_KEYS
|
3700 |
|
|
* @see KeyboardFocusManager#BACKWARD_TRAVERSAL_KEYS
|
3701 |
|
|
* @see KeyboardFocusManager#UP_CYCLE_TRAVERSAL_KEYS
|
3702 |
|
|
* @since 1.4
|
3703 |
|
|
*/
|
3704 |
|
|
public boolean areFocusTraversalKeysSet (int id)
|
3705 |
|
|
{
|
3706 |
|
|
if (id != KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS &&
|
3707 |
|
|
id != KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS &&
|
3708 |
|
|
id != KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS)
|
3709 |
|
|
throw new IllegalArgumentException ();
|
3710 |
|
|
|
3711 |
|
|
return focusTraversalKeys != null && focusTraversalKeys[id] != null;
|
3712 |
|
|
}
|
3713 |
|
|
|
3714 |
|
|
/**
|
3715 |
|
|
* Enable or disable focus traversal keys on this Component. If
|
3716 |
|
|
* they are, then the keyboard focus manager consumes and acts on
|
3717 |
|
|
* key press and release events that trigger focus traversal, and
|
3718 |
|
|
* discards the corresponding key typed events. If focus traversal
|
3719 |
|
|
* keys are disabled, then all key events that would otherwise
|
3720 |
|
|
* trigger focus traversal are sent to this Component.
|
3721 |
|
|
*
|
3722 |
|
|
* @param focusTraversalKeysEnabled the new value of the flag
|
3723 |
|
|
* @see #getFocusTraversalKeysEnabled ()
|
3724 |
|
|
* @see #setFocusTraversalKeys (int, Set)
|
3725 |
|
|
* @see #getFocusTraversalKeys (int)
|
3726 |
|
|
* @since 1.4
|
3727 |
|
|
*/
|
3728 |
|
|
public void setFocusTraversalKeysEnabled (boolean focusTraversalKeysEnabled)
|
3729 |
|
|
{
|
3730 |
|
|
firePropertyChange ("focusTraversalKeysEnabled",
|
3731 |
|
|
this.focusTraversalKeysEnabled,
|
3732 |
|
|
focusTraversalKeysEnabled);
|
3733 |
|
|
this.focusTraversalKeysEnabled = focusTraversalKeysEnabled;
|
3734 |
|
|
}
|
3735 |
|
|
|
3736 |
|
|
/**
|
3737 |
|
|
* Check whether or not focus traversal keys are enabled on this
|
3738 |
|
|
* Component. If they are, then the keyboard focus manager consumes
|
3739 |
|
|
* and acts on key press and release events that trigger focus
|
3740 |
|
|
* traversal, and discards the corresponding key typed events. If
|
3741 |
|
|
* focus traversal keys are disabled, then all key events that would
|
3742 |
|
|
* otherwise trigger focus traversal are sent to this Component.
|
3743 |
|
|
*
|
3744 |
|
|
* @return true if focus traversal keys are enabled
|
3745 |
|
|
* @see #setFocusTraversalKeysEnabled (boolean)
|
3746 |
|
|
* @see #setFocusTraversalKeys (int, Set)
|
3747 |
|
|
* @see #getFocusTraversalKeys (int)
|
3748 |
|
|
* @since 1.4
|
3749 |
|
|
*/
|
3750 |
|
|
public boolean getFocusTraversalKeysEnabled ()
|
3751 |
|
|
{
|
3752 |
|
|
return focusTraversalKeysEnabled;
|
3753 |
|
|
}
|
3754 |
|
|
|
3755 |
|
|
/**
|
3756 |
|
|
* Request that this Component be given the keyboard input focus and
|
3757 |
|
|
* that its top-level ancestor become the focused Window.
|
3758 |
|
|
*
|
3759 |
|
|
* For the request to be granted, the Component must be focusable,
|
3760 |
|
|
* displayable and showing and the top-level Window to which it
|
3761 |
|
|
* belongs must be focusable. If the request is initially denied on
|
3762 |
|
|
* the basis that the top-level Window is not focusable, the request
|
3763 |
|
|
* will be remembered and granted when the Window does become
|
3764 |
|
|
* focused.
|
3765 |
|
|
*
|
3766 |
|
|
* Never assume that this Component is the focus owner until it
|
3767 |
|
|
* receives a FOCUS_GAINED event.
|
3768 |
|
|
*
|
3769 |
|
|
* The behaviour of this method is platform-dependent.
|
3770 |
|
|
* {@link #requestFocusInWindow()} should be used instead.
|
3771 |
|
|
*
|
3772 |
|
|
* @see #requestFocusInWindow ()
|
3773 |
|
|
* @see FocusEvent
|
3774 |
|
|
* @see #addFocusListener (FocusListener)
|
3775 |
|
|
* @see #isFocusable ()
|
3776 |
|
|
* @see #isDisplayable ()
|
3777 |
|
|
* @see KeyboardFocusManager#clearGlobalFocusOwner ()
|
3778 |
|
|
*/
|
3779 |
|
|
public void requestFocus ()
|
3780 |
|
|
{
|
3781 |
|
|
if (isDisplayable ()
|
3782 |
|
|
&& isShowing ()
|
3783 |
|
|
&& isFocusable ())
|
3784 |
|
|
{
|
3785 |
|
|
synchronized (getTreeLock ())
|
3786 |
|
|
{
|
3787 |
|
|
// Find this Component's top-level ancestor.
|
3788 |
|
|
Container parent = (this instanceof Container) ? (Container) this
|
3789 |
|
|
: getParent();
|
3790 |
|
|
while (parent != null
|
3791 |
|
|
&& !(parent instanceof Window))
|
3792 |
|
|
parent = parent.getParent ();
|
3793 |
|
|
|
3794 |
|
|
if (parent == null)
|
3795 |
|
|
return;
|
3796 |
|
|
|
3797 |
|
|
Window toplevel = (Window) parent;
|
3798 |
|
|
if (toplevel.isFocusableWindow ())
|
3799 |
|
|
{
|
3800 |
|
|
if (peer != null && !isLightweight())
|
3801 |
|
|
// This call will cause a FOCUS_GAINED event to be
|
3802 |
|
|
// posted to the system event queue if the native
|
3803 |
|
|
// windowing system grants the focus request.
|
3804 |
|
|
peer.requestFocus ();
|
3805 |
|
|
else
|
3806 |
|
|
{
|
3807 |
|
|
// Either our peer hasn't been created yet or we're a
|
3808 |
|
|
// lightweight component. In either case we want to
|
3809 |
|
|
// post a FOCUS_GAINED event.
|
3810 |
|
|
EventQueue eq = Toolkit.getDefaultToolkit ().getSystemEventQueue ();
|
3811 |
|
|
synchronized (eq)
|
3812 |
|
|
{
|
3813 |
|
|
KeyboardFocusManager manager = KeyboardFocusManager.getCurrentKeyboardFocusManager ();
|
3814 |
|
|
Component currentFocusOwner = manager.getGlobalPermanentFocusOwner ();
|
3815 |
|
|
if (currentFocusOwner != null)
|
3816 |
|
|
{
|
3817 |
|
|
eq.postEvent (new FocusEvent(currentFocusOwner, FocusEvent.FOCUS_LOST,
|
3818 |
|
|
false, this));
|
3819 |
|
|
eq.postEvent (new FocusEvent(this, FocusEvent.FOCUS_GAINED, false,
|
3820 |
|
|
currentFocusOwner));
|
3821 |
|
|
}
|
3822 |
|
|
else
|
3823 |
|
|
eq.postEvent (new FocusEvent(this, FocusEvent.FOCUS_GAINED, false));
|
3824 |
|
|
}
|
3825 |
|
|
}
|
3826 |
|
|
}
|
3827 |
|
|
else
|
3828 |
|
|
pendingFocusRequest = new FocusEvent(this, FocusEvent.FOCUS_GAINED);
|
3829 |
|
|
}
|
3830 |
|
|
}
|
3831 |
|
|
}
|
3832 |
|
|
|
3833 |
|
|
/**
|
3834 |
|
|
* Request that this Component be given the keyboard input focus and
|
3835 |
|
|
* that its top-level ancestor become the focused Window.
|
3836 |
|
|
*
|
3837 |
|
|
* For the request to be granted, the Component must be focusable,
|
3838 |
|
|
* displayable and showing and the top-level Window to which it
|
3839 |
|
|
* belongs must be focusable. If the request is initially denied on
|
3840 |
|
|
* the basis that the top-level Window is not focusable, the request
|
3841 |
|
|
* will be remembered and granted when the Window does become
|
3842 |
|
|
* focused.
|
3843 |
|
|
*
|
3844 |
|
|
* Never assume that this Component is the focus owner until it
|
3845 |
|
|
* receives a FOCUS_GAINED event.
|
3846 |
|
|
*
|
3847 |
|
|
* The behaviour of this method is platform-dependent.
|
3848 |
|
|
* {@link #requestFocusInWindow()} should be used instead.
|
3849 |
|
|
*
|
3850 |
|
|
* If the return value is false, the request is guaranteed to fail.
|
3851 |
|
|
* If the return value is true, the request will succeed unless it
|
3852 |
|
|
* is vetoed or something in the native windowing system intervenes,
|
3853 |
|
|
* preventing this Component's top-level ancestor from becoming
|
3854 |
|
|
* focused. This method is meant to be called by derived
|
3855 |
|
|
* lightweight Components that want to avoid unnecessary repainting
|
3856 |
|
|
* when they know a given focus transfer need only be temporary.
|
3857 |
|
|
*
|
3858 |
|
|
* @param temporary true if the focus request is temporary
|
3859 |
|
|
* @return true if the request has a chance of success
|
3860 |
|
|
* @see #requestFocusInWindow ()
|
3861 |
|
|
* @see FocusEvent
|
3862 |
|
|
* @see #addFocusListener (FocusListener)
|
3863 |
|
|
* @see #isFocusable ()
|
3864 |
|
|
* @see #isDisplayable ()
|
3865 |
|
|
* @see KeyboardFocusManager#clearGlobalFocusOwner ()
|
3866 |
|
|
* @since 1.4
|
3867 |
|
|
*/
|
3868 |
|
|
protected boolean requestFocus (boolean temporary)
|
3869 |
|
|
{
|
3870 |
|
|
if (isDisplayable ()
|
3871 |
|
|
&& isShowing ()
|
3872 |
|
|
&& isFocusable ())
|
3873 |
|
|
{
|
3874 |
|
|
synchronized (getTreeLock ())
|
3875 |
|
|
{
|
3876 |
|
|
// Find this Component's top-level ancestor.
|
3877 |
|
|
Container parent = getParent ();
|
3878 |
|
|
|
3879 |
|
|
while (parent != null
|
3880 |
|
|
&& !(parent instanceof Window))
|
3881 |
|
|
parent = parent.getParent ();
|
3882 |
|
|
|
3883 |
|
|
Window toplevel = (Window) parent;
|
3884 |
|
|
if (toplevel.isFocusableWindow ())
|
3885 |
|
|
{
|
3886 |
|
|
if (peer != null && !isLightweight())
|
3887 |
|
|
// This call will cause a FOCUS_GAINED event to be
|
3888 |
|
|
// posted to the system event queue if the native
|
3889 |
|
|
// windowing system grants the focus request.
|
3890 |
|
|
peer.requestFocus ();
|
3891 |
|
|
else
|
3892 |
|
|
{
|
3893 |
|
|
// Either our peer hasn't been created yet or we're a
|
3894 |
|
|
// lightweight component. In either case we want to
|
3895 |
|
|
// post a FOCUS_GAINED event.
|
3896 |
|
|
EventQueue eq = Toolkit.getDefaultToolkit ().getSystemEventQueue ();
|
3897 |
|
|
synchronized (eq)
|
3898 |
|
|
{
|
3899 |
|
|
KeyboardFocusManager manager = KeyboardFocusManager.getCurrentKeyboardFocusManager ();
|
3900 |
|
|
Component currentFocusOwner = manager.getGlobalPermanentFocusOwner ();
|
3901 |
|
|
if (currentFocusOwner != null)
|
3902 |
|
|
{
|
3903 |
|
|
eq.postEvent (new FocusEvent(currentFocusOwner,
|
3904 |
|
|
FocusEvent.FOCUS_LOST,
|
3905 |
|
|
temporary, this));
|
3906 |
|
|
eq.postEvent (new FocusEvent(this,
|
3907 |
|
|
FocusEvent.FOCUS_GAINED,
|
3908 |
|
|
temporary,
|
3909 |
|
|
currentFocusOwner));
|
3910 |
|
|
}
|
3911 |
|
|
else
|
3912 |
|
|
eq.postEvent (new FocusEvent(this, FocusEvent.FOCUS_GAINED, temporary));
|
3913 |
|
|
}
|
3914 |
|
|
}
|
3915 |
|
|
}
|
3916 |
|
|
else
|
3917 |
|
|
// FIXME: need to add a focus listener to our top-level
|
3918 |
|
|
// ancestor, so that we can post this event when it becomes
|
3919 |
|
|
// the focused window.
|
3920 |
|
|
pendingFocusRequest = new FocusEvent(this, FocusEvent.FOCUS_GAINED, temporary);
|
3921 |
|
|
}
|
3922 |
|
|
}
|
3923 |
|
|
// Always return true.
|
3924 |
|
|
return true;
|
3925 |
|
|
}
|
3926 |
|
|
|
3927 |
|
|
/**
|
3928 |
|
|
* Request that this component be given the keyboard input focus, if
|
3929 |
|
|
* its top-level ancestor is the currently focused Window. A
|
3930 |
|
|
* <code>FOCUS_GAINED</code> event will be fired if and only if this
|
3931 |
|
|
* request is successful. To be successful, the component must be
|
3932 |
|
|
* displayable, showing, and focusable, and its ancestor top-level
|
3933 |
|
|
* Window must be focused.
|
3934 |
|
|
*
|
3935 |
|
|
* If the return value is false, the request is guaranteed to fail.
|
3936 |
|
|
* If the return value is true, the request will succeed unless it
|
3937 |
|
|
* is vetoed or something in the native windowing system intervenes,
|
3938 |
|
|
* preventing this Component's top-level ancestor from becoming
|
3939 |
|
|
* focused.
|
3940 |
|
|
*
|
3941 |
|
|
* @return true if the request has a chance of success
|
3942 |
|
|
* @see #requestFocus ()
|
3943 |
|
|
* @see FocusEvent
|
3944 |
|
|
* @see #addFocusListener (FocusListener)
|
3945 |
|
|
* @see #isFocusable ()
|
3946 |
|
|
* @see #isDisplayable ()
|
3947 |
|
|
* @see KeyboardFocusManager#clearGlobalFocusOwner ()
|
3948 |
|
|
* @since 1.4
|
3949 |
|
|
*/
|
3950 |
|
|
public boolean requestFocusInWindow ()
|
3951 |
|
|
{
|
3952 |
|
|
return requestFocusInWindow (false);
|
3953 |
|
|
}
|
3954 |
|
|
|
3955 |
|
|
/**
|
3956 |
|
|
* Request that this component be given the keyboard input focus, if
|
3957 |
|
|
* its top-level ancestor is the currently focused Window. A
|
3958 |
|
|
* <code>FOCUS_GAINED</code> event will be fired if and only if this
|
3959 |
|
|
* request is successful. To be successful, the component must be
|
3960 |
|
|
* displayable, showing, and focusable, and its ancestor top-level
|
3961 |
|
|
* Window must be focused.
|
3962 |
|
|
*
|
3963 |
|
|
* If the return value is false, the request is guaranteed to fail.
|
3964 |
|
|
* If the return value is true, the request will succeed unless it
|
3965 |
|
|
* is vetoed or something in the native windowing system intervenes,
|
3966 |
|
|
* preventing this Component's top-level ancestor from becoming
|
3967 |
|
|
* focused. This method is meant to be called by derived
|
3968 |
|
|
* lightweight Components that want to avoid unnecessary repainting
|
3969 |
|
|
* when they know a given focus transfer need only be temporary.
|
3970 |
|
|
*
|
3971 |
|
|
* @param temporary true if the focus request is temporary
|
3972 |
|
|
* @return true if the request has a chance of success
|
3973 |
|
|
* @see #requestFocus ()
|
3974 |
|
|
* @see FocusEvent
|
3975 |
|
|
* @see #addFocusListener (FocusListener)
|
3976 |
|
|
* @see #isFocusable ()
|
3977 |
|
|
* @see #isDisplayable ()
|
3978 |
|
|
* @see KeyboardFocusManager#clearGlobalFocusOwner ()
|
3979 |
|
|
* @since 1.4
|
3980 |
|
|
*/
|
3981 |
|
|
protected boolean requestFocusInWindow (boolean temporary)
|
3982 |
|
|
{
|
3983 |
|
|
KeyboardFocusManager manager = KeyboardFocusManager.getCurrentKeyboardFocusManager ();
|
3984 |
|
|
|
3985 |
|
|
Window focusedWindow = manager.getFocusedWindow ();
|
3986 |
|
|
|
3987 |
|
|
if (isDisplayable ()
|
3988 |
|
|
&& isShowing ()
|
3989 |
|
|
&& isFocusable ())
|
3990 |
|
|
{
|
3991 |
|
|
if (focusedWindow != null)
|
3992 |
|
|
{
|
3993 |
|
|
synchronized (getTreeLock ())
|
3994 |
|
|
{
|
3995 |
|
|
Container parent = getParent ();
|
3996 |
|
|
|
3997 |
|
|
while (parent != null
|
3998 |
|
|
&& !(parent instanceof Window))
|
3999 |
|
|
parent = parent.getParent ();
|
4000 |
|
|
|
4001 |
|
|
Window toplevel = (Window) parent;
|
4002 |
|
|
|
4003 |
|
|
// Check if top-level ancestor is currently focused window.
|
4004 |
|
|
if (focusedWindow == toplevel)
|
4005 |
|
|
{
|
4006 |
|
|
if (peer != null
|
4007 |
|
|
&& !isLightweight()
|
4008 |
|
|
&& !(this instanceof Window))
|
4009 |
|
|
// This call will cause a FOCUS_GAINED event to be
|
4010 |
|
|
// posted to the system event queue if the native
|
4011 |
|
|
// windowing system grants the focus request.
|
4012 |
|
|
peer.requestFocus ();
|
4013 |
|
|
else
|
4014 |
|
|
{
|
4015 |
|
|
// Either our peer hasn't been created yet or we're a
|
4016 |
|
|
// lightweight component. In either case we want to
|
4017 |
|
|
// post a FOCUS_GAINED event.
|
4018 |
|
|
EventQueue eq = Toolkit.getDefaultToolkit ().getSystemEventQueue ();
|
4019 |
|
|
synchronized (eq)
|
4020 |
|
|
{
|
4021 |
|
|
Component currentFocusOwner = manager.getGlobalPermanentFocusOwner ();
|
4022 |
|
|
if (currentFocusOwner != null)
|
4023 |
|
|
{
|
4024 |
|
|
eq.postEvent (new FocusEvent(currentFocusOwner, FocusEvent.FOCUS_LOST,
|
4025 |
|
|
temporary, this));
|
4026 |
|
|
eq.postEvent (new FocusEvent(this, FocusEvent.FOCUS_GAINED, temporary,
|
4027 |
|
|
currentFocusOwner));
|
4028 |
|
|
}
|
4029 |
|
|
else
|
4030 |
|
|
eq.postEvent (new FocusEvent(this, FocusEvent.FOCUS_GAINED, temporary));
|
4031 |
|
|
}
|
4032 |
|
|
}
|
4033 |
|
|
}
|
4034 |
|
|
else
|
4035 |
|
|
return false;
|
4036 |
|
|
}
|
4037 |
|
|
}
|
4038 |
|
|
|
4039 |
|
|
return true;
|
4040 |
|
|
}
|
4041 |
|
|
return false;
|
4042 |
|
|
}
|
4043 |
|
|
|
4044 |
|
|
/**
|
4045 |
|
|
* Transfers focus to the next component in the focus traversal
|
4046 |
|
|
* order, as though this were the current focus owner.
|
4047 |
|
|
*
|
4048 |
|
|
* @see #requestFocus()
|
4049 |
|
|
* @since 1.1
|
4050 |
|
|
*/
|
4051 |
|
|
public void transferFocus ()
|
4052 |
|
|
{
|
4053 |
|
|
nextFocus ();
|
4054 |
|
|
}
|
4055 |
|
|
|
4056 |
|
|
/**
|
4057 |
|
|
* Returns the root container that owns the focus cycle where this
|
4058 |
|
|
* component resides. A focus cycle root is in two cycles, one as
|
4059 |
|
|
* the ancestor, and one as the focusable element; this call always
|
4060 |
|
|
* returns the ancestor.
|
4061 |
|
|
*
|
4062 |
|
|
* @return the ancestor container that owns the focus cycle
|
4063 |
|
|
* @since 1.4
|
4064 |
|
|
*/
|
4065 |
|
|
public Container getFocusCycleRootAncestor ()
|
4066 |
|
|
{
|
4067 |
|
|
if (this instanceof Window
|
4068 |
|
|
&& ((Container) this).isFocusCycleRoot ())
|
4069 |
|
|
return (Container) this;
|
4070 |
|
|
|
4071 |
|
|
Container parent = getParent ();
|
4072 |
|
|
|
4073 |
|
|
while (parent != null
|
4074 |
|
|
&& !parent.isFocusCycleRoot ())
|
4075 |
|
|
parent = parent.getParent ();
|
4076 |
|
|
|
4077 |
|
|
return parent;
|
4078 |
|
|
}
|
4079 |
|
|
|
4080 |
|
|
/**
|
4081 |
|
|
* Tests if the container is the ancestor of the focus cycle that
|
4082 |
|
|
* this component belongs to.
|
4083 |
|
|
*
|
4084 |
|
|
* @param c the container to test
|
4085 |
|
|
* @return true if c is the focus cycle root
|
4086 |
|
|
* @since 1.4
|
4087 |
|
|
*/
|
4088 |
|
|
public boolean isFocusCycleRoot (Container c)
|
4089 |
|
|
{
|
4090 |
|
|
return c == getFocusCycleRootAncestor ();
|
4091 |
|
|
}
|
4092 |
|
|
|
4093 |
|
|
/**
|
4094 |
|
|
* AWT 1.0 focus event processor. Transfers focus to the next
|
4095 |
|
|
* component in the focus traversal order, as though this were the
|
4096 |
|
|
* current focus owner.
|
4097 |
|
|
*
|
4098 |
|
|
* @deprecated use {@link #transferFocus ()} instead
|
4099 |
|
|
*/
|
4100 |
|
|
public void nextFocus ()
|
4101 |
|
|
{
|
4102 |
|
|
KeyboardFocusManager manager = KeyboardFocusManager.getCurrentKeyboardFocusManager ();
|
4103 |
|
|
|
4104 |
|
|
manager.focusNextComponent (this);
|
4105 |
|
|
}
|
4106 |
|
|
|
4107 |
|
|
/**
|
4108 |
|
|
* Transfers focus to the previous component in the focus traversal
|
4109 |
|
|
* order, as though this were the current focus owner.
|
4110 |
|
|
*
|
4111 |
|
|
* @see #requestFocus ()
|
4112 |
|
|
* @since 1.4
|
4113 |
|
|
*/
|
4114 |
|
|
public void transferFocusBackward ()
|
4115 |
|
|
{
|
4116 |
|
|
KeyboardFocusManager manager = KeyboardFocusManager.getCurrentKeyboardFocusManager ();
|
4117 |
|
|
|
4118 |
|
|
manager.focusPreviousComponent (this);
|
4119 |
|
|
}
|
4120 |
|
|
|
4121 |
|
|
/**
|
4122 |
|
|
* Transfers focus to the focus cycle root of this component.
|
4123 |
|
|
* However, if this is a Window, the default focus owner in the
|
4124 |
|
|
* window in the current focus cycle is focused instead.
|
4125 |
|
|
*
|
4126 |
|
|
* @see #requestFocus()
|
4127 |
|
|
* @see #isFocusCycleRoot(Container)
|
4128 |
|
|
* @since 1.4
|
4129 |
|
|
*/
|
4130 |
|
|
public void transferFocusUpCycle ()
|
4131 |
|
|
{
|
4132 |
|
|
KeyboardFocusManager manager = KeyboardFocusManager.getCurrentKeyboardFocusManager ();
|
4133 |
|
|
|
4134 |
|
|
manager.upFocusCycle (this);
|
4135 |
|
|
}
|
4136 |
|
|
|
4137 |
|
|
/**
|
4138 |
|
|
* Tests if this component is the focus owner. Use {@link
|
4139 |
|
|
* #isFocusOwner ()} instead.
|
4140 |
|
|
*
|
4141 |
|
|
* @return true if this component owns focus
|
4142 |
|
|
* @since 1.2
|
4143 |
|
|
*/
|
4144 |
|
|
public boolean hasFocus ()
|
4145 |
|
|
{
|
4146 |
|
|
KeyboardFocusManager manager = KeyboardFocusManager.getCurrentKeyboardFocusManager ();
|
4147 |
|
|
|
4148 |
|
|
Component focusOwner = manager.getFocusOwner ();
|
4149 |
|
|
|
4150 |
|
|
return this == focusOwner;
|
4151 |
|
|
}
|
4152 |
|
|
|
4153 |
|
|
/**
|
4154 |
|
|
* Tests if this component is the focus owner.
|
4155 |
|
|
*
|
4156 |
|
|
* @return true if this component owns focus
|
4157 |
|
|
* @since 1.4
|
4158 |
|
|
*/
|
4159 |
|
|
public boolean isFocusOwner()
|
4160 |
|
|
{
|
4161 |
|
|
return hasFocus ();
|
4162 |
|
|
}
|
4163 |
|
|
|
4164 |
|
|
/**
|
4165 |
|
|
* Adds the specified popup menu to this component.
|
4166 |
|
|
*
|
4167 |
|
|
* @param popup the popup menu to be added
|
4168 |
|
|
*
|
4169 |
|
|
* @see #remove(MenuComponent)
|
4170 |
|
|
*
|
4171 |
|
|
* @since 1.1
|
4172 |
|
|
*/
|
4173 |
|
|
public synchronized void add(PopupMenu popup)
|
4174 |
|
|
{
|
4175 |
|
|
if (popups == null)
|
4176 |
|
|
popups = new Vector();
|
4177 |
|
|
popups.add(popup);
|
4178 |
|
|
|
4179 |
|
|
if (popup.parent != null)
|
4180 |
|
|
popup.parent.remove(popup);
|
4181 |
|
|
popup.parent = this;
|
4182 |
|
|
if (peer != null)
|
4183 |
|
|
popup.addNotify();
|
4184 |
|
|
}
|
4185 |
|
|
|
4186 |
|
|
/**
|
4187 |
|
|
* Removes the specified popup menu from this component.
|
4188 |
|
|
*
|
4189 |
|
|
* @param popup the popup menu to remove
|
4190 |
|
|
* @see #add(PopupMenu)
|
4191 |
|
|
* @since 1.1
|
4192 |
|
|
*/
|
4193 |
|
|
public synchronized void remove(MenuComponent popup)
|
4194 |
|
|
{
|
4195 |
|
|
if (popups != null)
|
4196 |
|
|
popups.remove(popup);
|
4197 |
|
|
}
|
4198 |
|
|
|
4199 |
|
|
/**
|
4200 |
|
|
* Returns a debugging string representing this component. The string may
|
4201 |
|
|
* be empty but not null.
|
4202 |
|
|
*
|
4203 |
|
|
* @return a string representing this component
|
4204 |
|
|
*/
|
4205 |
|
|
protected String paramString()
|
4206 |
|
|
{
|
4207 |
|
|
StringBuffer param = new StringBuffer();
|
4208 |
|
|
String name = getName();
|
4209 |
|
|
if (name != null)
|
4210 |
|
|
param.append(name).append(",");
|
4211 |
|
|
param.append(x).append(",").append(y).append(",").append(width)
|
4212 |
|
|
.append("x").append(height);
|
4213 |
|
|
if (! isValid())
|
4214 |
|
|
param.append(",invalid");
|
4215 |
|
|
if (! isVisible())
|
4216 |
|
|
param.append(",invisible");
|
4217 |
|
|
if (! isEnabled())
|
4218 |
|
|
param.append(",disabled");
|
4219 |
|
|
if (! isOpaque())
|
4220 |
|
|
param.append(",translucent");
|
4221 |
|
|
if (isDoubleBuffered())
|
4222 |
|
|
param.append(",doublebuffered");
|
4223 |
|
|
if (parent == null)
|
4224 |
|
|
param.append(",parent=null");
|
4225 |
|
|
else
|
4226 |
|
|
param.append(",parent=").append(parent.getName());
|
4227 |
|
|
return param.toString();
|
4228 |
|
|
}
|
4229 |
|
|
|
4230 |
|
|
/**
|
4231 |
|
|
* Returns a string representation of this component. This is implemented
|
4232 |
|
|
* as <code>getClass().getName() + '[' + paramString() + ']'</code>.
|
4233 |
|
|
*
|
4234 |
|
|
* @return a string representation of this component
|
4235 |
|
|
*/
|
4236 |
|
|
public String toString()
|
4237 |
|
|
{
|
4238 |
|
|
return getClass().getName() + '[' + paramString() + ']';
|
4239 |
|
|
}
|
4240 |
|
|
|
4241 |
|
|
/**
|
4242 |
|
|
* Prints a listing of this component to <code>System.out</code>.
|
4243 |
|
|
*
|
4244 |
|
|
* @see #list(PrintStream)
|
4245 |
|
|
*/
|
4246 |
|
|
public void list()
|
4247 |
|
|
{
|
4248 |
|
|
list(System.out, 0);
|
4249 |
|
|
}
|
4250 |
|
|
|
4251 |
|
|
/**
|
4252 |
|
|
* Prints a listing of this component to the specified print stream.
|
4253 |
|
|
*
|
4254 |
|
|
* @param out the <code>PrintStream</code> to print to
|
4255 |
|
|
*/
|
4256 |
|
|
public void list(PrintStream out)
|
4257 |
|
|
{
|
4258 |
|
|
list(out, 0);
|
4259 |
|
|
}
|
4260 |
|
|
|
4261 |
|
|
/**
|
4262 |
|
|
* Prints a listing of this component to the specified print stream,
|
4263 |
|
|
* starting at the specified indentation point.
|
4264 |
|
|
*
|
4265 |
|
|
* @param out the <code>PrintStream</code> to print to
|
4266 |
|
|
* @param indent the indentation point
|
4267 |
|
|
*/
|
4268 |
|
|
public void list(PrintStream out, int indent)
|
4269 |
|
|
{
|
4270 |
|
|
for (int i = 0; i < indent; ++i)
|
4271 |
|
|
out.print(' ');
|
4272 |
|
|
out.println(toString());
|
4273 |
|
|
}
|
4274 |
|
|
|
4275 |
|
|
/**
|
4276 |
|
|
* Prints a listing of this component to the specified print writer.
|
4277 |
|
|
*
|
4278 |
|
|
* @param out the <code>PrintWrinter</code> to print to
|
4279 |
|
|
* @since 1.1
|
4280 |
|
|
*/
|
4281 |
|
|
public void list(PrintWriter out)
|
4282 |
|
|
{
|
4283 |
|
|
list(out, 0);
|
4284 |
|
|
}
|
4285 |
|
|
|
4286 |
|
|
/**
|
4287 |
|
|
* Prints a listing of this component to the specified print writer,
|
4288 |
|
|
* starting at the specified indentation point.
|
4289 |
|
|
*
|
4290 |
|
|
* @param out the <code>PrintWriter</code> to print to
|
4291 |
|
|
* @param indent the indentation point
|
4292 |
|
|
* @since 1.1
|
4293 |
|
|
*/
|
4294 |
|
|
public void list(PrintWriter out, int indent)
|
4295 |
|
|
{
|
4296 |
|
|
for (int i = 0; i < indent; ++i)
|
4297 |
|
|
out.print(' ');
|
4298 |
|
|
out.println(toString());
|
4299 |
|
|
}
|
4300 |
|
|
|
4301 |
|
|
/**
|
4302 |
|
|
* Adds the specified property listener to this component. This is harmless
|
4303 |
|
|
* if the listener is null, but if the listener has already been registered,
|
4304 |
|
|
* it will now be registered twice. The property listener ignores inherited
|
4305 |
|
|
* properties. Recognized properties include:<br>
|
4306 |
|
|
* <ul>
|
4307 |
|
|
* <li>the font (<code>"font"</code>)</li>
|
4308 |
|
|
* <li>the background color (<code>"background"</code>)</li>
|
4309 |
|
|
* <li>the foreground color (<code>"foreground"</code>)</li>
|
4310 |
|
|
* <li>the focusability (<code>"focusable"</code>)</li>
|
4311 |
|
|
* <li>the focus key traversal enabled state
|
4312 |
|
|
* (<code>"focusTraversalKeysEnabled"</code>)</li>
|
4313 |
|
|
* <li>the set of forward traversal keys
|
4314 |
|
|
* (<code>"forwardFocusTraversalKeys"</code>)</li>
|
4315 |
|
|
* <li>the set of backward traversal keys
|
4316 |
|
|
* (<code>"backwardFocusTraversalKeys"</code>)</li>
|
4317 |
|
|
* <li>the set of up-cycle traversal keys
|
4318 |
|
|
* (<code>"upCycleFocusTraversalKeys"</code>)</li>
|
4319 |
|
|
* </ul>
|
4320 |
|
|
*
|
4321 |
|
|
* @param listener the new listener to add
|
4322 |
|
|
* @see #removePropertyChangeListener(PropertyChangeListener)
|
4323 |
|
|
* @see #getPropertyChangeListeners()
|
4324 |
|
|
* @see #addPropertyChangeListener(String, PropertyChangeListener)
|
4325 |
|
|
* @since 1.1
|
4326 |
|
|
*/
|
4327 |
|
|
public void addPropertyChangeListener(PropertyChangeListener listener)
|
4328 |
|
|
{
|
4329 |
|
|
if (changeSupport == null)
|
4330 |
|
|
changeSupport = new PropertyChangeSupport(this);
|
4331 |
|
|
changeSupport.addPropertyChangeListener(listener);
|
4332 |
|
|
}
|
4333 |
|
|
|
4334 |
|
|
/**
|
4335 |
|
|
* Removes the specified property listener from the component. This is
|
4336 |
|
|
* harmless if the listener was not previously registered.
|
4337 |
|
|
*
|
4338 |
|
|
* @param listener the listener to remove
|
4339 |
|
|
* @see #addPropertyChangeListener(PropertyChangeListener)
|
4340 |
|
|
* @see #getPropertyChangeListeners()
|
4341 |
|
|
* @see #removePropertyChangeListener(String, PropertyChangeListener)
|
4342 |
|
|
* @since 1.1
|
4343 |
|
|
*/
|
4344 |
|
|
public void removePropertyChangeListener(PropertyChangeListener listener)
|
4345 |
|
|
{
|
4346 |
|
|
if (changeSupport != null)
|
4347 |
|
|
changeSupport.removePropertyChangeListener(listener);
|
4348 |
|
|
}
|
4349 |
|
|
|
4350 |
|
|
/**
|
4351 |
|
|
* Returns an array of all specified listeners registered on this component.
|
4352 |
|
|
*
|
4353 |
|
|
* @return an array of listeners
|
4354 |
|
|
* @see #addPropertyChangeListener(PropertyChangeListener)
|
4355 |
|
|
* @see #removePropertyChangeListener(PropertyChangeListener)
|
4356 |
|
|
* @see #getPropertyChangeListeners(String)
|
4357 |
|
|
* @since 1.4
|
4358 |
|
|
*/
|
4359 |
|
|
public PropertyChangeListener[] getPropertyChangeListeners()
|
4360 |
|
|
{
|
4361 |
|
|
return changeSupport == null ? new PropertyChangeListener[0]
|
4362 |
|
|
: changeSupport.getPropertyChangeListeners();
|
4363 |
|
|
}
|
4364 |
|
|
|
4365 |
|
|
/**
|
4366 |
|
|
* Adds the specified property listener to this component. This is harmless
|
4367 |
|
|
* if the listener is null, but if the listener has already been registered,
|
4368 |
|
|
* it will now be registered twice. The property listener ignores inherited
|
4369 |
|
|
* properties. The listener is keyed to a single property. Recognized
|
4370 |
|
|
* properties include:<br>
|
4371 |
|
|
* <ul>
|
4372 |
|
|
* <li>the font (<code>"font"</code>)</li>
|
4373 |
|
|
* <li>the background color (<code>"background"</code>)</li>
|
4374 |
|
|
* <li>the foreground color (<code>"foreground"</code>)</li>
|
4375 |
|
|
* <li>the focusability (<code>"focusable"</code>)</li>
|
4376 |
|
|
* <li>the focus key traversal enabled state
|
4377 |
|
|
* (<code>"focusTraversalKeysEnabled"</code>)</li>
|
4378 |
|
|
* <li>the set of forward traversal keys
|
4379 |
|
|
* (<code>"forwardFocusTraversalKeys"</code>)</li>
|
4380 |
|
|
p * <li>the set of backward traversal keys
|
4381 |
|
|
* (<code>"backwardFocusTraversalKeys"</code>)</li>
|
4382 |
|
|
* <li>the set of up-cycle traversal keys
|
4383 |
|
|
* (<code>"upCycleFocusTraversalKeys"</code>)</li>
|
4384 |
|
|
* </ul>
|
4385 |
|
|
*
|
4386 |
|
|
* @param propertyName the property name to filter on
|
4387 |
|
|
* @param listener the new listener to add
|
4388 |
|
|
* @see #removePropertyChangeListener(String, PropertyChangeListener)
|
4389 |
|
|
* @see #getPropertyChangeListeners(String)
|
4390 |
|
|
* @see #addPropertyChangeListener(PropertyChangeListener)
|
4391 |
|
|
* @since 1.1
|
4392 |
|
|
*/
|
4393 |
|
|
public void addPropertyChangeListener(String propertyName,
|
4394 |
|
|
PropertyChangeListener listener)
|
4395 |
|
|
{
|
4396 |
|
|
if (changeSupport == null)
|
4397 |
|
|
changeSupport = new PropertyChangeSupport(this);
|
4398 |
|
|
changeSupport.addPropertyChangeListener(propertyName, listener);
|
4399 |
|
|
}
|
4400 |
|
|
|
4401 |
|
|
/**
|
4402 |
|
|
* Removes the specified property listener on a particular property from
|
4403 |
|
|
* the component. This is harmless if the listener was not previously
|
4404 |
|
|
* registered.
|
4405 |
|
|
*
|
4406 |
|
|
* @param propertyName the property name to filter on
|
4407 |
|
|
* @param listener the listener to remove
|
4408 |
|
|
* @see #addPropertyChangeListener(String, PropertyChangeListener)
|
4409 |
|
|
* @see #getPropertyChangeListeners(String)
|
4410 |
|
|
* @see #removePropertyChangeListener(PropertyChangeListener)
|
4411 |
|
|
* @since 1.1
|
4412 |
|
|
*/
|
4413 |
|
|
public void removePropertyChangeListener(String propertyName,
|
4414 |
|
|
PropertyChangeListener listener)
|
4415 |
|
|
{
|
4416 |
|
|
if (changeSupport != null)
|
4417 |
|
|
changeSupport.removePropertyChangeListener(propertyName, listener);
|
4418 |
|
|
}
|
4419 |
|
|
|
4420 |
|
|
/**
|
4421 |
|
|
* Returns an array of all specified listeners on the named property that
|
4422 |
|
|
* are registered on this component.
|
4423 |
|
|
*
|
4424 |
|
|
* @return an array of listeners
|
4425 |
|
|
* @see #addPropertyChangeListener(String, PropertyChangeListener)
|
4426 |
|
|
* @see #removePropertyChangeListener(String, PropertyChangeListener)
|
4427 |
|
|
* @see #getPropertyChangeListeners()
|
4428 |
|
|
* @since 1.4
|
4429 |
|
|
*/
|
4430 |
|
|
public PropertyChangeListener[] getPropertyChangeListeners(String property)
|
4431 |
|
|
{
|
4432 |
|
|
return changeSupport == null ? new PropertyChangeListener[0]
|
4433 |
|
|
: changeSupport.getPropertyChangeListeners(property);
|
4434 |
|
|
}
|
4435 |
|
|
|
4436 |
|
|
/**
|
4437 |
|
|
* Report a change in a bound property to any registered property listeners.
|
4438 |
|
|
*
|
4439 |
|
|
* @param propertyName the property that changed
|
4440 |
|
|
* @param oldValue the old property value
|
4441 |
|
|
* @param newValue the new property value
|
4442 |
|
|
*/
|
4443 |
|
|
protected void firePropertyChange(String propertyName, Object oldValue,
|
4444 |
|
|
Object newValue)
|
4445 |
|
|
{
|
4446 |
|
|
if (changeSupport != null)
|
4447 |
|
|
changeSupport.firePropertyChange(propertyName, oldValue, newValue);
|
4448 |
|
|
}
|
4449 |
|
|
|
4450 |
|
|
/**
|
4451 |
|
|
* Report a change in a bound property to any registered property listeners.
|
4452 |
|
|
*
|
4453 |
|
|
* @param propertyName the property that changed
|
4454 |
|
|
* @param oldValue the old property value
|
4455 |
|
|
* @param newValue the new property value
|
4456 |
|
|
*/
|
4457 |
|
|
protected void firePropertyChange(String propertyName, boolean oldValue,
|
4458 |
|
|
boolean newValue)
|
4459 |
|
|
{
|
4460 |
|
|
if (changeSupport != null)
|
4461 |
|
|
changeSupport.firePropertyChange(propertyName, oldValue, newValue);
|
4462 |
|
|
}
|
4463 |
|
|
|
4464 |
|
|
/**
|
4465 |
|
|
* Report a change in a bound property to any registered property listeners.
|
4466 |
|
|
*
|
4467 |
|
|
* @param propertyName the property that changed
|
4468 |
|
|
* @param oldValue the old property value
|
4469 |
|
|
* @param newValue the new property value
|
4470 |
|
|
*/
|
4471 |
|
|
protected void firePropertyChange(String propertyName, int oldValue,
|
4472 |
|
|
int newValue)
|
4473 |
|
|
{
|
4474 |
|
|
if (changeSupport != null)
|
4475 |
|
|
changeSupport.firePropertyChange(propertyName, oldValue, newValue);
|
4476 |
|
|
}
|
4477 |
|
|
|
4478 |
|
|
/**
|
4479 |
|
|
* Sets the text layout orientation of this component. New components default
|
4480 |
|
|
* to UNKNOWN (which behaves like LEFT_TO_RIGHT). This method affects only
|
4481 |
|
|
* the current component, while
|
4482 |
|
|
* {@link #applyComponentOrientation(ComponentOrientation)} affects the
|
4483 |
|
|
* entire hierarchy.
|
4484 |
|
|
*
|
4485 |
|
|
* @param o the new orientation
|
4486 |
|
|
* @throws NullPointerException if o is null
|
4487 |
|
|
* @see #getComponentOrientation()
|
4488 |
|
|
*/
|
4489 |
|
|
public void setComponentOrientation(ComponentOrientation o)
|
4490 |
|
|
{
|
4491 |
|
|
if (o == null)
|
4492 |
|
|
throw new NullPointerException();
|
4493 |
|
|
ComponentOrientation oldOrientation = orientation;
|
4494 |
|
|
orientation = o;
|
4495 |
|
|
firePropertyChange("componentOrientation", oldOrientation, o);
|
4496 |
|
|
}
|
4497 |
|
|
|
4498 |
|
|
/**
|
4499 |
|
|
* Determines the text layout orientation used by this component.
|
4500 |
|
|
*
|
4501 |
|
|
* @return the component orientation
|
4502 |
|
|
* @see #setComponentOrientation(ComponentOrientation)
|
4503 |
|
|
*/
|
4504 |
|
|
public ComponentOrientation getComponentOrientation()
|
4505 |
|
|
{
|
4506 |
|
|
return orientation;
|
4507 |
|
|
}
|
4508 |
|
|
|
4509 |
|
|
/**
|
4510 |
|
|
* Sets the text layout orientation of this component. New components default
|
4511 |
|
|
* to UNKNOWN (which behaves like LEFT_TO_RIGHT). This method affects the
|
4512 |
|
|
* entire hierarchy, while
|
4513 |
|
|
* {@link #setComponentOrientation(ComponentOrientation)} affects only the
|
4514 |
|
|
* current component.
|
4515 |
|
|
*
|
4516 |
|
|
* @param o the new orientation
|
4517 |
|
|
* @throws NullPointerException if o is null
|
4518 |
|
|
* @see #getComponentOrientation()
|
4519 |
|
|
* @since 1.4
|
4520 |
|
|
*/
|
4521 |
|
|
public void applyComponentOrientation(ComponentOrientation o)
|
4522 |
|
|
{
|
4523 |
|
|
setComponentOrientation(o);
|
4524 |
|
|
}
|
4525 |
|
|
|
4526 |
|
|
/**
|
4527 |
|
|
* Returns the accessibility framework context of this class. Component is
|
4528 |
|
|
* not accessible, so the default implementation returns null. Subclasses
|
4529 |
|
|
* must override this behavior, and return an appropriate subclass of
|
4530 |
|
|
* {@link AccessibleAWTComponent}.
|
4531 |
|
|
*
|
4532 |
|
|
* @return the accessibility context
|
4533 |
|
|
*/
|
4534 |
|
|
public AccessibleContext getAccessibleContext()
|
4535 |
|
|
{
|
4536 |
|
|
return null;
|
4537 |
|
|
}
|
4538 |
|
|
|
4539 |
|
|
|
4540 |
|
|
// Helper methods; some are package visible for use by subclasses.
|
4541 |
|
|
|
4542 |
|
|
/**
|
4543 |
|
|
* Subclasses should override this to return unique component names like
|
4544 |
|
|
* "menuitem0".
|
4545 |
|
|
*
|
4546 |
|
|
* @return the generated name for this component
|
4547 |
|
|
*/
|
4548 |
|
|
String generateName()
|
4549 |
|
|
{
|
4550 |
|
|
// Component is abstract.
|
4551 |
|
|
return null;
|
4552 |
|
|
}
|
4553 |
|
|
|
4554 |
|
|
/**
|
4555 |
|
|
* Sets the peer for this component.
|
4556 |
|
|
*
|
4557 |
|
|
* @param peer the new peer
|
4558 |
|
|
*/
|
4559 |
|
|
final void setPeer(ComponentPeer peer)
|
4560 |
|
|
{
|
4561 |
|
|
this.peer = peer;
|
4562 |
|
|
}
|
4563 |
|
|
|
4564 |
|
|
/**
|
4565 |
|
|
* Implementation method that allows classes such as Canvas and Window to
|
4566 |
|
|
* override the graphics configuration without violating the published API.
|
4567 |
|
|
*
|
4568 |
|
|
* @return the graphics configuration
|
4569 |
|
|
*/
|
4570 |
|
|
GraphicsConfiguration getGraphicsConfigurationImpl()
|
4571 |
|
|
{
|
4572 |
|
|
if (peer != null)
|
4573 |
|
|
{
|
4574 |
|
|
GraphicsConfiguration config = peer.getGraphicsConfiguration();
|
4575 |
|
|
if (config != null)
|
4576 |
|
|
return config;
|
4577 |
|
|
}
|
4578 |
|
|
|
4579 |
|
|
if (parent != null)
|
4580 |
|
|
return parent.getGraphicsConfiguration();
|
4581 |
|
|
|
4582 |
|
|
return null;
|
4583 |
|
|
}
|
4584 |
|
|
|
4585 |
|
|
/**
|
4586 |
|
|
* Translate an AWT 1.1 event ({@link AWTEvent}) into an AWT 1.0
|
4587 |
|
|
* event ({@link Event}).
|
4588 |
|
|
*
|
4589 |
|
|
* @param e an AWT 1.1 event to translate
|
4590 |
|
|
*
|
4591 |
|
|
* @return an AWT 1.0 event representing e
|
4592 |
|
|
*/
|
4593 |
|
|
static Event translateEvent (AWTEvent e)
|
4594 |
|
|
{
|
4595 |
|
|
Component target = (Component) e.getSource ();
|
4596 |
|
|
Event translated = null;
|
4597 |
|
|
|
4598 |
|
|
if (e instanceof InputEvent)
|
4599 |
|
|
{
|
4600 |
|
|
InputEvent ie = (InputEvent) e;
|
4601 |
|
|
long when = ie.getWhen ();
|
4602 |
|
|
|
4603 |
|
|
int oldID = 0;
|
4604 |
|
|
int id = e.getID ();
|
4605 |
|
|
|
4606 |
|
|
int oldMods = 0;
|
4607 |
|
|
int mods = ie.getModifiersEx ();
|
4608 |
|
|
|
4609 |
|
|
if ((mods & InputEvent.BUTTON2_DOWN_MASK) != 0)
|
4610 |
|
|
oldMods |= Event.META_MASK;
|
4611 |
|
|
else if ((mods & InputEvent.BUTTON3_DOWN_MASK) != 0)
|
4612 |
|
|
oldMods |= Event.ALT_MASK;
|
4613 |
|
|
|
4614 |
|
|
if ((mods & InputEvent.SHIFT_DOWN_MASK) != 0)
|
4615 |
|
|
oldMods |= Event.SHIFT_MASK;
|
4616 |
|
|
|
4617 |
|
|
if ((mods & InputEvent.CTRL_DOWN_MASK) != 0)
|
4618 |
|
|
oldMods |= Event.CTRL_MASK;
|
4619 |
|
|
|
4620 |
|
|
if ((mods & InputEvent.META_DOWN_MASK) != 0)
|
4621 |
|
|
oldMods |= Event.META_MASK;
|
4622 |
|
|
|
4623 |
|
|
if ((mods & InputEvent.ALT_DOWN_MASK) != 0)
|
4624 |
|
|
oldMods |= Event.ALT_MASK;
|
4625 |
|
|
|
4626 |
|
|
if (e instanceof MouseEvent)
|
4627 |
|
|
{
|
4628 |
|
|
if (id == MouseEvent.MOUSE_PRESSED)
|
4629 |
|
|
oldID = Event.MOUSE_DOWN;
|
4630 |
|
|
else if (id == MouseEvent.MOUSE_RELEASED)
|
4631 |
|
|
oldID = Event.MOUSE_UP;
|
4632 |
|
|
else if (id == MouseEvent.MOUSE_MOVED)
|
4633 |
|
|
oldID = Event.MOUSE_MOVE;
|
4634 |
|
|
else if (id == MouseEvent.MOUSE_DRAGGED)
|
4635 |
|
|
oldID = Event.MOUSE_DRAG;
|
4636 |
|
|
else if (id == MouseEvent.MOUSE_ENTERED)
|
4637 |
|
|
oldID = Event.MOUSE_ENTER;
|
4638 |
|
|
else if (id == MouseEvent.MOUSE_EXITED)
|
4639 |
|
|
oldID = Event.MOUSE_EXIT;
|
4640 |
|
|
else
|
4641 |
|
|
// No analogous AWT 1.0 mouse event.
|
4642 |
|
|
return null;
|
4643 |
|
|
|
4644 |
|
|
MouseEvent me = (MouseEvent) e;
|
4645 |
|
|
|
4646 |
|
|
translated = new Event (target, when, oldID,
|
4647 |
|
|
me.getX (), me.getY (), 0, oldMods);
|
4648 |
|
|
}
|
4649 |
|
|
else if (e instanceof KeyEvent)
|
4650 |
|
|
{
|
4651 |
|
|
if (id == KeyEvent.KEY_PRESSED)
|
4652 |
|
|
oldID = Event.KEY_PRESS;
|
4653 |
|
|
else if (e.getID () == KeyEvent.KEY_RELEASED)
|
4654 |
|
|
oldID = Event.KEY_RELEASE;
|
4655 |
|
|
else
|
4656 |
|
|
// No analogous AWT 1.0 key event.
|
4657 |
|
|
return null;
|
4658 |
|
|
|
4659 |
|
|
int oldKey = 0;
|
4660 |
|
|
int newKey = ((KeyEvent) e).getKeyCode ();
|
4661 |
|
|
switch (newKey)
|
4662 |
|
|
{
|
4663 |
|
|
case KeyEvent.VK_BACK_SPACE:
|
4664 |
|
|
oldKey = Event.BACK_SPACE;
|
4665 |
|
|
break;
|
4666 |
|
|
case KeyEvent.VK_CAPS_LOCK:
|
4667 |
|
|
oldKey = Event.CAPS_LOCK;
|
4668 |
|
|
break;
|
4669 |
|
|
case KeyEvent.VK_DELETE:
|
4670 |
|
|
oldKey = Event.DELETE;
|
4671 |
|
|
break;
|
4672 |
|
|
case KeyEvent.VK_DOWN:
|
4673 |
|
|
case KeyEvent.VK_KP_DOWN:
|
4674 |
|
|
oldKey = Event.DOWN;
|
4675 |
|
|
break;
|
4676 |
|
|
case KeyEvent.VK_END:
|
4677 |
|
|
oldKey = Event.END;
|
4678 |
|
|
break;
|
4679 |
|
|
case KeyEvent.VK_ENTER:
|
4680 |
|
|
oldKey = Event.ENTER;
|
4681 |
|
|
break;
|
4682 |
|
|
case KeyEvent.VK_ESCAPE:
|
4683 |
|
|
oldKey = Event.ESCAPE;
|
4684 |
|
|
break;
|
4685 |
|
|
case KeyEvent.VK_F1:
|
4686 |
|
|
oldKey = Event.F1;
|
4687 |
|
|
break;
|
4688 |
|
|
case KeyEvent.VK_F10:
|
4689 |
|
|
oldKey = Event.F10;
|
4690 |
|
|
break;
|
4691 |
|
|
case KeyEvent.VK_F11:
|
4692 |
|
|
oldKey = Event.F11;
|
4693 |
|
|
break;
|
4694 |
|
|
case KeyEvent.VK_F12:
|
4695 |
|
|
oldKey = Event.F12;
|
4696 |
|
|
break;
|
4697 |
|
|
case KeyEvent.VK_F2:
|
4698 |
|
|
oldKey = Event.F2;
|
4699 |
|
|
break;
|
4700 |
|
|
case KeyEvent.VK_F3:
|
4701 |
|
|
oldKey = Event.F3;
|
4702 |
|
|
break;
|
4703 |
|
|
case KeyEvent.VK_F4:
|
4704 |
|
|
oldKey = Event.F4;
|
4705 |
|
|
break;
|
4706 |
|
|
case KeyEvent.VK_F5:
|
4707 |
|
|
oldKey = Event.F5;
|
4708 |
|
|
break;
|
4709 |
|
|
case KeyEvent.VK_F6:
|
4710 |
|
|
oldKey = Event.F6;
|
4711 |
|
|
break;
|
4712 |
|
|
case KeyEvent.VK_F7:
|
4713 |
|
|
oldKey = Event.F7;
|
4714 |
|
|
break;
|
4715 |
|
|
case KeyEvent.VK_F8:
|
4716 |
|
|
oldKey = Event.F8;
|
4717 |
|
|
break;
|
4718 |
|
|
case KeyEvent.VK_F9:
|
4719 |
|
|
oldKey = Event.F9;
|
4720 |
|
|
break;
|
4721 |
|
|
case KeyEvent.VK_HOME:
|
4722 |
|
|
oldKey = Event.HOME;
|
4723 |
|
|
break;
|
4724 |
|
|
case KeyEvent.VK_INSERT:
|
4725 |
|
|
oldKey = Event.INSERT;
|
4726 |
|
|
break;
|
4727 |
|
|
case KeyEvent.VK_LEFT:
|
4728 |
|
|
case KeyEvent.VK_KP_LEFT:
|
4729 |
|
|
oldKey = Event.LEFT;
|
4730 |
|
|
break;
|
4731 |
|
|
case KeyEvent.VK_NUM_LOCK:
|
4732 |
|
|
oldKey = Event.NUM_LOCK;
|
4733 |
|
|
break;
|
4734 |
|
|
case KeyEvent.VK_PAUSE:
|
4735 |
|
|
oldKey = Event.PAUSE;
|
4736 |
|
|
break;
|
4737 |
|
|
case KeyEvent.VK_PAGE_DOWN:
|
4738 |
|
|
oldKey = Event.PGDN;
|
4739 |
|
|
break;
|
4740 |
|
|
case KeyEvent.VK_PAGE_UP:
|
4741 |
|
|
oldKey = Event.PGUP;
|
4742 |
|
|
break;
|
4743 |
|
|
case KeyEvent.VK_PRINTSCREEN:
|
4744 |
|
|
oldKey = Event.PRINT_SCREEN;
|
4745 |
|
|
break;
|
4746 |
|
|
case KeyEvent.VK_RIGHT:
|
4747 |
|
|
case KeyEvent.VK_KP_RIGHT:
|
4748 |
|
|
oldKey = Event.RIGHT;
|
4749 |
|
|
break;
|
4750 |
|
|
case KeyEvent.VK_SCROLL_LOCK:
|
4751 |
|
|
oldKey = Event.SCROLL_LOCK;
|
4752 |
|
|
break;
|
4753 |
|
|
case KeyEvent.VK_TAB:
|
4754 |
|
|
oldKey = Event.TAB;
|
4755 |
|
|
break;
|
4756 |
|
|
case KeyEvent.VK_UP:
|
4757 |
|
|
case KeyEvent.VK_KP_UP:
|
4758 |
|
|
oldKey = Event.UP;
|
4759 |
|
|
break;
|
4760 |
|
|
default:
|
4761 |
|
|
oldKey = newKey;
|
4762 |
|
|
}
|
4763 |
|
|
|
4764 |
|
|
translated = new Event (target, when, oldID,
|
4765 |
|
|
0, 0, oldKey, oldMods);
|
4766 |
|
|
}
|
4767 |
|
|
}
|
4768 |
|
|
else if (e instanceof ActionEvent)
|
4769 |
|
|
translated = new Event (target, Event.ACTION_EVENT,
|
4770 |
|
|
((ActionEvent) e).getActionCommand ());
|
4771 |
|
|
|
4772 |
|
|
return translated;
|
4773 |
|
|
}
|
4774 |
|
|
|
4775 |
|
|
/**
|
4776 |
|
|
* Implementation of dispatchEvent. Allows trusted package classes
|
4777 |
|
|
* to dispatch additional events first. This implementation first
|
4778 |
|
|
* translates <code>e</code> to an AWT 1.0 event and sends the
|
4779 |
|
|
* result to {@link #postEvent}. If the AWT 1.0 event is not
|
4780 |
|
|
* handled, and events of type <code>e</code> are enabled for this
|
4781 |
|
|
* component, e is passed on to {@link #processEvent}.
|
4782 |
|
|
*
|
4783 |
|
|
* @param e the event to dispatch
|
4784 |
|
|
*/
|
4785 |
|
|
|
4786 |
|
|
void dispatchEventImpl(AWTEvent e)
|
4787 |
|
|
{
|
4788 |
|
|
Event oldEvent = translateEvent (e);
|
4789 |
|
|
|
4790 |
|
|
if (oldEvent != null)
|
4791 |
|
|
postEvent (oldEvent);
|
4792 |
|
|
|
4793 |
|
|
if (eventTypeEnabled (e.id))
|
4794 |
|
|
{
|
4795 |
|
|
// the trick we use to communicate between dispatch and redispatch
|
4796 |
|
|
// is to have KeyboardFocusManager.redispatch synchronize on the
|
4797 |
|
|
// object itself. we then do not redispatch to KeyboardFocusManager
|
4798 |
|
|
// if we are already holding the lock.
|
4799 |
|
|
if (! Thread.holdsLock(e))
|
4800 |
|
|
{
|
4801 |
|
|
switch (e.id)
|
4802 |
|
|
{
|
4803 |
|
|
case WindowEvent.WINDOW_GAINED_FOCUS:
|
4804 |
|
|
case WindowEvent.WINDOW_LOST_FOCUS:
|
4805 |
|
|
case KeyEvent.KEY_PRESSED:
|
4806 |
|
|
case KeyEvent.KEY_RELEASED:
|
4807 |
|
|
case KeyEvent.KEY_TYPED:
|
4808 |
|
|
case FocusEvent.FOCUS_GAINED:
|
4809 |
|
|
case FocusEvent.FOCUS_LOST:
|
4810 |
|
|
if (KeyboardFocusManager
|
4811 |
|
|
.getCurrentKeyboardFocusManager()
|
4812 |
|
|
.dispatchEvent(e))
|
4813 |
|
|
return;
|
4814 |
|
|
case MouseEvent.MOUSE_PRESSED:
|
4815 |
|
|
if (isLightweight())
|
4816 |
|
|
requestFocus();
|
4817 |
|
|
break;
|
4818 |
|
|
}
|
4819 |
|
|
}
|
4820 |
|
|
if (e.id != PaintEvent.PAINT && e.id != PaintEvent.UPDATE)
|
4821 |
|
|
processEvent(e);
|
4822 |
|
|
}
|
4823 |
|
|
|
4824 |
|
|
if (peer != null)
|
4825 |
|
|
peer.handleEvent(e);
|
4826 |
|
|
}
|
4827 |
|
|
|
4828 |
|
|
/**
|
4829 |
|
|
* Tells whether or not an event type is enabled.
|
4830 |
|
|
*/
|
4831 |
|
|
boolean eventTypeEnabled (int type)
|
4832 |
|
|
{
|
4833 |
|
|
if (type > AWTEvent.RESERVED_ID_MAX)
|
4834 |
|
|
return true;
|
4835 |
|
|
|
4836 |
|
|
switch (type)
|
4837 |
|
|
{
|
4838 |
|
|
case ComponentEvent.COMPONENT_HIDDEN:
|
4839 |
|
|
case ComponentEvent.COMPONENT_MOVED:
|
4840 |
|
|
case ComponentEvent.COMPONENT_RESIZED:
|
4841 |
|
|
case ComponentEvent.COMPONENT_SHOWN:
|
4842 |
|
|
return (componentListener != null
|
4843 |
|
|
|| (eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0);
|
4844 |
|
|
|
4845 |
|
|
case KeyEvent.KEY_PRESSED:
|
4846 |
|
|
case KeyEvent.KEY_RELEASED:
|
4847 |
|
|
case KeyEvent.KEY_TYPED:
|
4848 |
|
|
return (keyListener != null
|
4849 |
|
|
|| (eventMask & AWTEvent.KEY_EVENT_MASK) != 0);
|
4850 |
|
|
|
4851 |
|
|
case MouseEvent.MOUSE_CLICKED:
|
4852 |
|
|
case MouseEvent.MOUSE_ENTERED:
|
4853 |
|
|
case MouseEvent.MOUSE_EXITED:
|
4854 |
|
|
case MouseEvent.MOUSE_PRESSED:
|
4855 |
|
|
case MouseEvent.MOUSE_RELEASED:
|
4856 |
|
|
case MouseEvent.MOUSE_MOVED:
|
4857 |
|
|
case MouseEvent.MOUSE_DRAGGED:
|
4858 |
|
|
return (mouseListener != null
|
4859 |
|
|
|| mouseMotionListener != null
|
4860 |
|
|
|| (eventMask & AWTEvent.MOUSE_EVENT_MASK) != 0);
|
4861 |
|
|
|
4862 |
|
|
case FocusEvent.FOCUS_GAINED:
|
4863 |
|
|
case FocusEvent.FOCUS_LOST:
|
4864 |
|
|
return (focusListener != null
|
4865 |
|
|
|| (eventMask & AWTEvent.FOCUS_EVENT_MASK) != 0);
|
4866 |
|
|
|
4867 |
|
|
case InputMethodEvent.INPUT_METHOD_TEXT_CHANGED:
|
4868 |
|
|
case InputMethodEvent.CARET_POSITION_CHANGED:
|
4869 |
|
|
return (inputMethodListener != null
|
4870 |
|
|
|| (eventMask & AWTEvent.INPUT_METHOD_EVENT_MASK) != 0);
|
4871 |
|
|
|
4872 |
|
|
case PaintEvent.PAINT:
|
4873 |
|
|
case PaintEvent.UPDATE:
|
4874 |
|
|
return (eventMask & AWTEvent.PAINT_EVENT_MASK) != 0;
|
4875 |
|
|
|
4876 |
|
|
default:
|
4877 |
|
|
return false;
|
4878 |
|
|
}
|
4879 |
|
|
}
|
4880 |
|
|
|
4881 |
|
|
/**
|
4882 |
|
|
* Coalesce paint events. Current heuristic is: Merge if the union of
|
4883 |
|
|
* areas is less than twice that of the sum of the areas. The X server
|
4884 |
|
|
* tend to create a lot of paint events that are adjacent but not
|
4885 |
|
|
* overlapping.
|
4886 |
|
|
*
|
4887 |
|
|
* <pre>
|
4888 |
|
|
* +------+
|
4889 |
|
|
* | +-----+ ...will be merged
|
4890 |
|
|
* | | |
|
4891 |
|
|
* | | |
|
4892 |
|
|
* +------+ |
|
4893 |
|
|
* +-----+
|
4894 |
|
|
*
|
4895 |
|
|
* +---------------+--+
|
4896 |
|
|
* | | | ...will not be merged
|
4897 |
|
|
* +---------------+ |
|
4898 |
|
|
* | |
|
4899 |
|
|
* | |
|
4900 |
|
|
* | |
|
4901 |
|
|
* | |
|
4902 |
|
|
* | |
|
4903 |
|
|
* +--+
|
4904 |
|
|
* </pre>
|
4905 |
|
|
*
|
4906 |
|
|
* @param queuedEvent the first paint event
|
4907 |
|
|
* @param newEvent the second paint event
|
4908 |
|
|
* @return the combined paint event, or null
|
4909 |
|
|
*/
|
4910 |
|
|
private PaintEvent coalescePaintEvents(PaintEvent queuedEvent,
|
4911 |
|
|
PaintEvent newEvent)
|
4912 |
|
|
{
|
4913 |
|
|
Rectangle r1 = queuedEvent.getUpdateRect();
|
4914 |
|
|
Rectangle r2 = newEvent.getUpdateRect();
|
4915 |
|
|
Rectangle union = r1.union(r2);
|
4916 |
|
|
|
4917 |
|
|
int r1a = r1.width * r1.height;
|
4918 |
|
|
int r2a = r2.width * r2.height;
|
4919 |
|
|
int ua = union.width * union.height;
|
4920 |
|
|
|
4921 |
|
|
if (ua > (r1a+r2a)*2)
|
4922 |
|
|
return null;
|
4923 |
|
|
/* The 2 factor should maybe be reconsidered. Perhaps 3/2
|
4924 |
|
|
would be better? */
|
4925 |
|
|
|
4926 |
|
|
newEvent.setUpdateRect(union);
|
4927 |
|
|
return newEvent;
|
4928 |
|
|
}
|
4929 |
|
|
|
4930 |
|
|
/**
|
4931 |
|
|
* This method is used to implement transferFocus(). CHILD is the child
|
4932 |
|
|
* making the request. This is overridden by Container; when called for an
|
4933 |
|
|
* ordinary component there is no child and so we always return null.
|
4934 |
|
|
*
|
4935 |
|
|
* FIXME: is this still needed, in light of focus traversal policies?
|
4936 |
|
|
*
|
4937 |
|
|
* @param child the component making the request
|
4938 |
|
|
* @return the next component to focus on
|
4939 |
|
|
*/
|
4940 |
|
|
Component findNextFocusComponent(Component child)
|
4941 |
|
|
{
|
4942 |
|
|
return null;
|
4943 |
|
|
}
|
4944 |
|
|
|
4945 |
|
|
/**
|
4946 |
|
|
* Deserializes this component. This regenerates all serializable listeners
|
4947 |
|
|
* which were registered originally.
|
4948 |
|
|
*
|
4949 |
|
|
* @param s the stream to read from
|
4950 |
|
|
* @throws ClassNotFoundException if deserialization fails
|
4951 |
|
|
* @throws IOException if the stream fails
|
4952 |
|
|
*/
|
4953 |
|
|
private void readObject(ObjectInputStream s)
|
4954 |
|
|
throws ClassNotFoundException, IOException
|
4955 |
|
|
{
|
4956 |
|
|
s.defaultReadObject();
|
4957 |
|
|
String key = (String) s.readObject();
|
4958 |
|
|
while (key != null)
|
4959 |
|
|
{
|
4960 |
|
|
Object listener = s.readObject();
|
4961 |
|
|
if ("componentL".equals(key))
|
4962 |
|
|
addComponentListener((ComponentListener) listener);
|
4963 |
|
|
else if ("focusL".equals(key))
|
4964 |
|
|
addFocusListener((FocusListener) listener);
|
4965 |
|
|
else if ("keyL".equals(key))
|
4966 |
|
|
addKeyListener((KeyListener) listener);
|
4967 |
|
|
else if ("mouseL".equals(key))
|
4968 |
|
|
addMouseListener((MouseListener) listener);
|
4969 |
|
|
else if ("mouseMotionL".equals(key))
|
4970 |
|
|
addMouseMotionListener((MouseMotionListener) listener);
|
4971 |
|
|
else if ("inputMethodL".equals(key))
|
4972 |
|
|
addInputMethodListener((InputMethodListener) listener);
|
4973 |
|
|
else if ("hierarchyL".equals(key))
|
4974 |
|
|
addHierarchyListener((HierarchyListener) listener);
|
4975 |
|
|
else if ("hierarchyBoundsL".equals(key))
|
4976 |
|
|
addHierarchyBoundsListener((HierarchyBoundsListener) listener);
|
4977 |
|
|
else if ("mouseWheelL".equals(key))
|
4978 |
|
|
addMouseWheelListener((MouseWheelListener) listener);
|
4979 |
|
|
key = (String) s.readObject();
|
4980 |
|
|
}
|
4981 |
|
|
}
|
4982 |
|
|
|
4983 |
|
|
/**
|
4984 |
|
|
* Serializes this component. This ignores all listeners which do not
|
4985 |
|
|
* implement Serializable, but includes those that do.
|
4986 |
|
|
*
|
4987 |
|
|
* @param s the stream to write to
|
4988 |
|
|
* @throws IOException if the stream fails
|
4989 |
|
|
*/
|
4990 |
|
|
private void writeObject(ObjectOutputStream s) throws IOException
|
4991 |
|
|
{
|
4992 |
|
|
s.defaultWriteObject();
|
4993 |
|
|
AWTEventMulticaster.save(s, "componentL", componentListener);
|
4994 |
|
|
AWTEventMulticaster.save(s, "focusL", focusListener);
|
4995 |
|
|
AWTEventMulticaster.save(s, "keyL", keyListener);
|
4996 |
|
|
AWTEventMulticaster.save(s, "mouseL", mouseListener);
|
4997 |
|
|
AWTEventMulticaster.save(s, "mouseMotionL", mouseMotionListener);
|
4998 |
|
|
AWTEventMulticaster.save(s, "inputMethodL", inputMethodListener);
|
4999 |
|
|
AWTEventMulticaster.save(s, "hierarchyL", hierarchyListener);
|
5000 |
|
|
AWTEventMulticaster.save(s, "hierarchyBoundsL", hierarchyBoundsListener);
|
5001 |
|
|
AWTEventMulticaster.save(s, "mouseWheelL", mouseWheelListener);
|
5002 |
|
|
s.writeObject(null);
|
5003 |
|
|
}
|
5004 |
|
|
|
5005 |
|
|
|
5006 |
|
|
// Nested classes.
|
5007 |
|
|
|
5008 |
|
|
/**
|
5009 |
|
|
* This class provides accessibility support for subclasses of container.
|
5010 |
|
|
*
|
5011 |
|
|
* @author Eric Blake (ebb9@email.byu.edu)
|
5012 |
|
|
* @since 1.3
|
5013 |
|
|
* @status updated to 1.4
|
5014 |
|
|
*/
|
5015 |
|
|
protected abstract class AccessibleAWTComponent extends AccessibleContext
|
5016 |
|
|
implements Serializable, AccessibleComponent
|
5017 |
|
|
{
|
5018 |
|
|
/**
|
5019 |
|
|
* Compatible with JDK 1.3+.
|
5020 |
|
|
*/
|
5021 |
|
|
private static final long serialVersionUID = 642321655757800191L;
|
5022 |
|
|
|
5023 |
|
|
/**
|
5024 |
|
|
* Converts show/hide events to PropertyChange events, and is registered
|
5025 |
|
|
* as a component listener on this component.
|
5026 |
|
|
*
|
5027 |
|
|
* @serial the component handler
|
5028 |
|
|
*/
|
5029 |
|
|
protected ComponentListener accessibleAWTComponentHandler
|
5030 |
|
|
= new AccessibleAWTComponentHandler();
|
5031 |
|
|
|
5032 |
|
|
/**
|
5033 |
|
|
* Converts focus events to PropertyChange events, and is registered
|
5034 |
|
|
* as a focus listener on this component.
|
5035 |
|
|
*
|
5036 |
|
|
* @serial the focus handler
|
5037 |
|
|
*/
|
5038 |
|
|
protected FocusListener accessibleAWTFocusHandler
|
5039 |
|
|
= new AccessibleAWTFocusHandler();
|
5040 |
|
|
|
5041 |
|
|
/**
|
5042 |
|
|
* The default constructor.
|
5043 |
|
|
*/
|
5044 |
|
|
protected AccessibleAWTComponent()
|
5045 |
|
|
{
|
5046 |
|
|
Component.this.addComponentListener(accessibleAWTComponentHandler);
|
5047 |
|
|
Component.this.addFocusListener(accessibleAWTFocusHandler);
|
5048 |
|
|
}
|
5049 |
|
|
|
5050 |
|
|
/**
|
5051 |
|
|
* Adds a global property change listener to the accessible component.
|
5052 |
|
|
*
|
5053 |
|
|
* @param l the listener to add
|
5054 |
|
|
* @see #ACCESSIBLE_NAME_PROPERTY
|
5055 |
|
|
* @see #ACCESSIBLE_DESCRIPTION_PROPERTY
|
5056 |
|
|
* @see #ACCESSIBLE_STATE_PROPERTY
|
5057 |
|
|
* @see #ACCESSIBLE_VALUE_PROPERTY
|
5058 |
|
|
* @see #ACCESSIBLE_SELECTION_PROPERTY
|
5059 |
|
|
* @see #ACCESSIBLE_TEXT_PROPERTY
|
5060 |
|
|
* @see #ACCESSIBLE_VISIBLE_DATA_PROPERTY
|
5061 |
|
|
*/
|
5062 |
|
|
public void addPropertyChangeListener(PropertyChangeListener l)
|
5063 |
|
|
{
|
5064 |
|
|
Component.this.addPropertyChangeListener(l);
|
5065 |
|
|
super.addPropertyChangeListener(l);
|
5066 |
|
|
}
|
5067 |
|
|
|
5068 |
|
|
/**
|
5069 |
|
|
* Removes a global property change listener from this accessible
|
5070 |
|
|
* component.
|
5071 |
|
|
*
|
5072 |
|
|
* @param l the listener to remove
|
5073 |
|
|
*/
|
5074 |
|
|
public void removePropertyChangeListener(PropertyChangeListener l)
|
5075 |
|
|
{
|
5076 |
|
|
Component.this.removePropertyChangeListener(l);
|
5077 |
|
|
super.removePropertyChangeListener(l);
|
5078 |
|
|
}
|
5079 |
|
|
|
5080 |
|
|
/**
|
5081 |
|
|
* Returns the accessible name of this component. It is almost always
|
5082 |
|
|
* wrong to return getName(), since it is not localized. In fact, for
|
5083 |
|
|
* things like buttons, this should be the text of the button, not the
|
5084 |
|
|
* name of the object. The tooltip text might also be appropriate.
|
5085 |
|
|
*
|
5086 |
|
|
* @return the name
|
5087 |
|
|
* @see #setAccessibleName(String)
|
5088 |
|
|
*/
|
5089 |
|
|
public String getAccessibleName()
|
5090 |
|
|
{
|
5091 |
|
|
return accessibleName == null ? getName() : accessibleName;
|
5092 |
|
|
}
|
5093 |
|
|
|
5094 |
|
|
/**
|
5095 |
|
|
* Returns a brief description of this accessible context. This should
|
5096 |
|
|
* be localized.
|
5097 |
|
|
*
|
5098 |
|
|
* @return a description of this component
|
5099 |
|
|
* @see #setAccessibleDescription(String)
|
5100 |
|
|
*/
|
5101 |
|
|
public String getAccessibleDescription()
|
5102 |
|
|
{
|
5103 |
|
|
return accessibleDescription;
|
5104 |
|
|
}
|
5105 |
|
|
|
5106 |
|
|
/**
|
5107 |
|
|
* Returns the role of this component.
|
5108 |
|
|
*
|
5109 |
|
|
* @return the accessible role
|
5110 |
|
|
*/
|
5111 |
|
|
public AccessibleRole getAccessibleRole()
|
5112 |
|
|
{
|
5113 |
|
|
return AccessibleRole.AWT_COMPONENT;
|
5114 |
|
|
}
|
5115 |
|
|
|
5116 |
|
|
/**
|
5117 |
|
|
* Returns a state set describing this component's state.
|
5118 |
|
|
*
|
5119 |
|
|
* @return a new state set
|
5120 |
|
|
* @see AccessibleState
|
5121 |
|
|
*/
|
5122 |
|
|
public AccessibleStateSet getAccessibleStateSet()
|
5123 |
|
|
{
|
5124 |
|
|
AccessibleStateSet s = new AccessibleStateSet();
|
5125 |
|
|
if (Component.this.isEnabled())
|
5126 |
|
|
s.add(AccessibleState.ENABLED);
|
5127 |
|
|
if (isFocusable())
|
5128 |
|
|
s.add(AccessibleState.FOCUSABLE);
|
5129 |
|
|
if (isFocusOwner())
|
5130 |
|
|
s.add(AccessibleState.FOCUSED);
|
5131 |
|
|
if (isOpaque())
|
5132 |
|
|
s.add(AccessibleState.OPAQUE);
|
5133 |
|
|
if (Component.this.isShowing())
|
5134 |
|
|
s.add(AccessibleState.SHOWING);
|
5135 |
|
|
if (Component.this.isVisible())
|
5136 |
|
|
s.add(AccessibleState.VISIBLE);
|
5137 |
|
|
return s;
|
5138 |
|
|
}
|
5139 |
|
|
|
5140 |
|
|
/**
|
5141 |
|
|
* Returns the parent of this component, if it is accessible.
|
5142 |
|
|
*
|
5143 |
|
|
* @return the accessible parent
|
5144 |
|
|
*/
|
5145 |
|
|
public Accessible getAccessibleParent()
|
5146 |
|
|
{
|
5147 |
|
|
if (accessibleParent == null)
|
5148 |
|
|
{
|
5149 |
|
|
Container parent = getParent();
|
5150 |
|
|
accessibleParent = parent instanceof Accessible
|
5151 |
|
|
? (Accessible) parent : null;
|
5152 |
|
|
}
|
5153 |
|
|
return accessibleParent;
|
5154 |
|
|
}
|
5155 |
|
|
|
5156 |
|
|
/**
|
5157 |
|
|
* Returns the index of this component in its accessible parent.
|
5158 |
|
|
*
|
5159 |
|
|
* @return the index, or -1 if the parent is not accessible
|
5160 |
|
|
* @see #getAccessibleParent()
|
5161 |
|
|
*/
|
5162 |
|
|
public int getAccessibleIndexInParent()
|
5163 |
|
|
{
|
5164 |
|
|
if (getAccessibleParent() == null)
|
5165 |
|
|
return -1;
|
5166 |
|
|
AccessibleContext context
|
5167 |
|
|
= ((Component) accessibleParent).getAccessibleContext();
|
5168 |
|
|
if (context == null)
|
5169 |
|
|
return -1;
|
5170 |
|
|
for (int i = context.getAccessibleChildrenCount(); --i >= 0; )
|
5171 |
|
|
if (context.getAccessibleChild(i) == Component.this)
|
5172 |
|
|
return i;
|
5173 |
|
|
return -1;
|
5174 |
|
|
}
|
5175 |
|
|
|
5176 |
|
|
/**
|
5177 |
|
|
* Returns the number of children of this component which implement
|
5178 |
|
|
* Accessible. Subclasses must override this if they can have children.
|
5179 |
|
|
*
|
5180 |
|
|
* @return the number of accessible children, default 0
|
5181 |
|
|
*/
|
5182 |
|
|
public int getAccessibleChildrenCount()
|
5183 |
|
|
{
|
5184 |
|
|
return 0;
|
5185 |
|
|
}
|
5186 |
|
|
|
5187 |
|
|
/**
|
5188 |
|
|
* Returns the ith accessible child. Subclasses must override this if
|
5189 |
|
|
* they can have children.
|
5190 |
|
|
*
|
5191 |
|
|
* @return the ith accessible child, or null
|
5192 |
|
|
* @see #getAccessibleChildrenCount()
|
5193 |
|
|
*/
|
5194 |
|
|
public Accessible getAccessibleChild(int i)
|
5195 |
|
|
{
|
5196 |
|
|
return null;
|
5197 |
|
|
}
|
5198 |
|
|
|
5199 |
|
|
/**
|
5200 |
|
|
* Returns the locale of this component.
|
5201 |
|
|
*
|
5202 |
|
|
* @return the locale
|
5203 |
|
|
* @throws IllegalComponentStateException if the locale is unknown
|
5204 |
|
|
*/
|
5205 |
|
|
public Locale getLocale()
|
5206 |
|
|
{
|
5207 |
|
|
return Component.this.getLocale();
|
5208 |
|
|
}
|
5209 |
|
|
|
5210 |
|
|
/**
|
5211 |
|
|
* Returns this, since it is an accessible component.
|
5212 |
|
|
*
|
5213 |
|
|
* @return the accessible component
|
5214 |
|
|
*/
|
5215 |
|
|
public AccessibleComponent getAccessibleComponent()
|
5216 |
|
|
{
|
5217 |
|
|
return this;
|
5218 |
|
|
}
|
5219 |
|
|
|
5220 |
|
|
/**
|
5221 |
|
|
* Gets the background color.
|
5222 |
|
|
*
|
5223 |
|
|
* @return the background color
|
5224 |
|
|
* @see #setBackground(Color)
|
5225 |
|
|
*/
|
5226 |
|
|
public Color getBackground()
|
5227 |
|
|
{
|
5228 |
|
|
return Component.this.getBackground();
|
5229 |
|
|
}
|
5230 |
|
|
|
5231 |
|
|
/**
|
5232 |
|
|
* Sets the background color.
|
5233 |
|
|
*
|
5234 |
|
|
* @param c the background color
|
5235 |
|
|
* @see #getBackground()
|
5236 |
|
|
* @see #isOpaque()
|
5237 |
|
|
*/
|
5238 |
|
|
public void setBackground(Color c)
|
5239 |
|
|
{
|
5240 |
|
|
Component.this.setBackground(c);
|
5241 |
|
|
}
|
5242 |
|
|
|
5243 |
|
|
/**
|
5244 |
|
|
* Gets the foreground color.
|
5245 |
|
|
*
|
5246 |
|
|
* @return the foreground color
|
5247 |
|
|
* @see #setForeground(Color)
|
5248 |
|
|
*/
|
5249 |
|
|
public Color getForeground()
|
5250 |
|
|
{
|
5251 |
|
|
return Component.this.getForeground();
|
5252 |
|
|
}
|
5253 |
|
|
|
5254 |
|
|
/**
|
5255 |
|
|
* Sets the foreground color.
|
5256 |
|
|
*
|
5257 |
|
|
* @param c the foreground color
|
5258 |
|
|
* @see #getForeground()
|
5259 |
|
|
*/
|
5260 |
|
|
public void setForeground(Color c)
|
5261 |
|
|
{
|
5262 |
|
|
Component.this.setForeground(c);
|
5263 |
|
|
}
|
5264 |
|
|
|
5265 |
|
|
/**
|
5266 |
|
|
* Gets the cursor.
|
5267 |
|
|
*
|
5268 |
|
|
* @return the cursor
|
5269 |
|
|
* @see #setCursor(Cursor)
|
5270 |
|
|
*/
|
5271 |
|
|
public Cursor getCursor()
|
5272 |
|
|
{
|
5273 |
|
|
return Component.this.getCursor();
|
5274 |
|
|
}
|
5275 |
|
|
|
5276 |
|
|
/**
|
5277 |
|
|
* Sets the cursor.
|
5278 |
|
|
*
|
5279 |
|
|
* @param cursor the cursor
|
5280 |
|
|
* @see #getCursor()
|
5281 |
|
|
*/
|
5282 |
|
|
public void setCursor(Cursor cursor)
|
5283 |
|
|
{
|
5284 |
|
|
Component.this.setCursor(cursor);
|
5285 |
|
|
}
|
5286 |
|
|
|
5287 |
|
|
/**
|
5288 |
|
|
* Gets the font.
|
5289 |
|
|
*
|
5290 |
|
|
* @return the font
|
5291 |
|
|
* @see #setFont(Font)
|
5292 |
|
|
*/
|
5293 |
|
|
public Font getFont()
|
5294 |
|
|
{
|
5295 |
|
|
return Component.this.getFont();
|
5296 |
|
|
}
|
5297 |
|
|
|
5298 |
|
|
/**
|
5299 |
|
|
* Sets the font.
|
5300 |
|
|
*
|
5301 |
|
|
* @param f the font
|
5302 |
|
|
* @see #getFont()
|
5303 |
|
|
*/
|
5304 |
|
|
public void setFont(Font f)
|
5305 |
|
|
{
|
5306 |
|
|
Component.this.setFont(f);
|
5307 |
|
|
}
|
5308 |
|
|
|
5309 |
|
|
/**
|
5310 |
|
|
* Gets the font metrics for a font.
|
5311 |
|
|
*
|
5312 |
|
|
* @param f the font to look up
|
5313 |
|
|
* @return its metrics
|
5314 |
|
|
* @throws NullPointerException if f is null
|
5315 |
|
|
* @see #getFont()
|
5316 |
|
|
*/
|
5317 |
|
|
public FontMetrics getFontMetrics(Font f)
|
5318 |
|
|
{
|
5319 |
|
|
return Component.this.getFontMetrics(f);
|
5320 |
|
|
}
|
5321 |
|
|
|
5322 |
|
|
/**
|
5323 |
|
|
* Tests if the component is enabled.
|
5324 |
|
|
*
|
5325 |
|
|
* @return true if the component is enabled
|
5326 |
|
|
* @see #setEnabled(boolean)
|
5327 |
|
|
* @see #getAccessibleStateSet()
|
5328 |
|
|
* @see AccessibleState#ENABLED
|
5329 |
|
|
*/
|
5330 |
|
|
public boolean isEnabled()
|
5331 |
|
|
{
|
5332 |
|
|
return Component.this.isEnabled();
|
5333 |
|
|
}
|
5334 |
|
|
|
5335 |
|
|
/**
|
5336 |
|
|
* Set whether the component is enabled.
|
5337 |
|
|
*
|
5338 |
|
|
* @param b the new enabled status
|
5339 |
|
|
* @see #isEnabled()
|
5340 |
|
|
*/
|
5341 |
|
|
public void setEnabled(boolean b)
|
5342 |
|
|
{
|
5343 |
|
|
Component.this.setEnabled(b);
|
5344 |
|
|
}
|
5345 |
|
|
|
5346 |
|
|
/**
|
5347 |
|
|
* Test whether the component is visible (not necesarily showing).
|
5348 |
|
|
*
|
5349 |
|
|
* @return true if it is visible
|
5350 |
|
|
* @see #setVisible(boolean)
|
5351 |
|
|
* @see #getAccessibleStateSet()
|
5352 |
|
|
* @see AccessibleState#VISIBLE
|
5353 |
|
|
*/
|
5354 |
|
|
public boolean isVisible()
|
5355 |
|
|
{
|
5356 |
|
|
return Component.this.isVisible();
|
5357 |
|
|
}
|
5358 |
|
|
|
5359 |
|
|
/**
|
5360 |
|
|
* Sets the visibility of this component.
|
5361 |
|
|
*
|
5362 |
|
|
* @param b the desired visibility
|
5363 |
|
|
* @see #isVisible()
|
5364 |
|
|
*/
|
5365 |
|
|
public void setVisible(boolean b)
|
5366 |
|
|
{
|
5367 |
|
|
Component.this.setVisible(b);
|
5368 |
|
|
}
|
5369 |
|
|
|
5370 |
|
|
/**
|
5371 |
|
|
* Tests if the component is showing.
|
5372 |
|
|
*
|
5373 |
|
|
* @return true if this is showing
|
5374 |
|
|
*/
|
5375 |
|
|
public boolean isShowing()
|
5376 |
|
|
{
|
5377 |
|
|
return Component.this.isShowing();
|
5378 |
|
|
}
|
5379 |
|
|
|
5380 |
|
|
/**
|
5381 |
|
|
* Tests if the point is contained in this component.
|
5382 |
|
|
*
|
5383 |
|
|
* @param p the point to check
|
5384 |
|
|
* @return true if it is contained
|
5385 |
|
|
* @throws NullPointerException if p is null
|
5386 |
|
|
*/
|
5387 |
|
|
public boolean contains(Point p)
|
5388 |
|
|
{
|
5389 |
|
|
return Component.this.contains(p.x, p.y);
|
5390 |
|
|
}
|
5391 |
|
|
|
5392 |
|
|
/**
|
5393 |
|
|
* Returns the location of this object on the screen, or null if it is
|
5394 |
|
|
* not showing.
|
5395 |
|
|
*
|
5396 |
|
|
* @return the location relative to screen coordinates, if showing
|
5397 |
|
|
* @see #getBounds()
|
5398 |
|
|
* @see #getLocation()
|
5399 |
|
|
*/
|
5400 |
|
|
public Point getLocationOnScreen()
|
5401 |
|
|
{
|
5402 |
|
|
return Component.this.isShowing() ? Component.this.getLocationOnScreen()
|
5403 |
|
|
: null;
|
5404 |
|
|
}
|
5405 |
|
|
|
5406 |
|
|
/**
|
5407 |
|
|
* Returns the location of this object relative to its parent's coordinate
|
5408 |
|
|
* system, or null if it is not showing.
|
5409 |
|
|
*
|
5410 |
|
|
* @return the location
|
5411 |
|
|
* @see #getBounds()
|
5412 |
|
|
* @see #getLocationOnScreen()
|
5413 |
|
|
*/
|
5414 |
|
|
public Point getLocation()
|
5415 |
|
|
{
|
5416 |
|
|
return Component.this.isShowing() ? Component.this.getLocation() : null;
|
5417 |
|
|
}
|
5418 |
|
|
|
5419 |
|
|
/**
|
5420 |
|
|
* Sets the location of this relative to its parent's coordinate system.
|
5421 |
|
|
*
|
5422 |
|
|
* @param p the location
|
5423 |
|
|
* @throws NullPointerException if p is null
|
5424 |
|
|
* @see #getLocation()
|
5425 |
|
|
*/
|
5426 |
|
|
public void setLocation(Point p)
|
5427 |
|
|
{
|
5428 |
|
|
Component.this.setLocation(p.x, p.y);
|
5429 |
|
|
}
|
5430 |
|
|
|
5431 |
|
|
/**
|
5432 |
|
|
* Gets the bounds of this component, or null if it is not on screen.
|
5433 |
|
|
*
|
5434 |
|
|
* @return the bounds
|
5435 |
|
|
* @see #contains(Point)
|
5436 |
|
|
* @see #setBounds(Rectangle)
|
5437 |
|
|
*/
|
5438 |
|
|
public Rectangle getBounds()
|
5439 |
|
|
{
|
5440 |
|
|
return Component.this.isShowing() ? Component.this.getBounds() : null;
|
5441 |
|
|
}
|
5442 |
|
|
|
5443 |
|
|
/**
|
5444 |
|
|
* Sets the bounds of this component.
|
5445 |
|
|
*
|
5446 |
|
|
* @param r the bounds
|
5447 |
|
|
* @throws NullPointerException if r is null
|
5448 |
|
|
* @see #getBounds()
|
5449 |
|
|
*/
|
5450 |
|
|
public void setBounds(Rectangle r)
|
5451 |
|
|
{
|
5452 |
|
|
Component.this.setBounds(r.x, r.y, r.width, r.height);
|
5453 |
|
|
}
|
5454 |
|
|
|
5455 |
|
|
/**
|
5456 |
|
|
* Gets the size of this component, or null if it is not showing.
|
5457 |
|
|
*
|
5458 |
|
|
* @return the size
|
5459 |
|
|
* @see #setSize(Dimension)
|
5460 |
|
|
*/
|
5461 |
|
|
public Dimension getSize()
|
5462 |
|
|
{
|
5463 |
|
|
return Component.this.isShowing() ? Component.this.getSize() : null;
|
5464 |
|
|
}
|
5465 |
|
|
|
5466 |
|
|
/**
|
5467 |
|
|
* Sets the size of this component.
|
5468 |
|
|
*
|
5469 |
|
|
* @param d the size
|
5470 |
|
|
* @throws NullPointerException if d is null
|
5471 |
|
|
* @see #getSize()
|
5472 |
|
|
*/
|
5473 |
|
|
public void setSize(Dimension d)
|
5474 |
|
|
{
|
5475 |
|
|
Component.this.setSize(d.width, d.height);
|
5476 |
|
|
}
|
5477 |
|
|
|
5478 |
|
|
/**
|
5479 |
|
|
* Returns the Accessible child at a point relative to the coordinate
|
5480 |
|
|
* system of this component, if one exists, or null. Since components
|
5481 |
|
|
* have no children, subclasses must override this to get anything besides
|
5482 |
|
|
* null.
|
5483 |
|
|
*
|
5484 |
|
|
* @param p the point to check
|
5485 |
|
|
* @return the accessible child at that point
|
5486 |
|
|
* @throws NullPointerException if p is null
|
5487 |
|
|
*/
|
5488 |
|
|
public Accessible getAccessibleAt(Point p)
|
5489 |
|
|
{
|
5490 |
|
|
return null;
|
5491 |
|
|
}
|
5492 |
|
|
|
5493 |
|
|
/**
|
5494 |
|
|
* Tests whether this component can accept focus.
|
5495 |
|
|
*
|
5496 |
|
|
* @return true if this is focus traversable
|
5497 |
|
|
* @see #getAccessibleStateSet ()
|
5498 |
|
|
* @see AccessibleState#FOCUSABLE
|
5499 |
|
|
* @see AccessibleState#FOCUSED
|
5500 |
|
|
*/
|
5501 |
|
|
public boolean isFocusTraversable ()
|
5502 |
|
|
{
|
5503 |
|
|
return Component.this.isFocusTraversable ();
|
5504 |
|
|
}
|
5505 |
|
|
|
5506 |
|
|
/**
|
5507 |
|
|
* Requests focus for this component.
|
5508 |
|
|
*
|
5509 |
|
|
* @see #isFocusTraversable ()
|
5510 |
|
|
*/
|
5511 |
|
|
public void requestFocus ()
|
5512 |
|
|
{
|
5513 |
|
|
Component.this.requestFocus ();
|
5514 |
|
|
}
|
5515 |
|
|
|
5516 |
|
|
/**
|
5517 |
|
|
* Adds a focus listener.
|
5518 |
|
|
*
|
5519 |
|
|
* @param l the listener to add
|
5520 |
|
|
*/
|
5521 |
|
|
public void addFocusListener(FocusListener l)
|
5522 |
|
|
{
|
5523 |
|
|
Component.this.addFocusListener(l);
|
5524 |
|
|
}
|
5525 |
|
|
|
5526 |
|
|
/**
|
5527 |
|
|
* Removes a focus listener.
|
5528 |
|
|
*
|
5529 |
|
|
* @param l the listener to remove
|
5530 |
|
|
*/
|
5531 |
|
|
public void removeFocusListener(FocusListener l)
|
5532 |
|
|
{
|
5533 |
|
|
Component.this.removeFocusListener(l);
|
5534 |
|
|
}
|
5535 |
|
|
|
5536 |
|
|
/**
|
5537 |
|
|
* Converts component changes into property changes.
|
5538 |
|
|
*
|
5539 |
|
|
* @author Eric Blake (ebb9@email.byu.edu)
|
5540 |
|
|
* @since 1.3
|
5541 |
|
|
* @status updated to 1.4
|
5542 |
|
|
*/
|
5543 |
|
|
protected class AccessibleAWTComponentHandler implements ComponentListener
|
5544 |
|
|
{
|
5545 |
|
|
/**
|
5546 |
|
|
* Default constructor.
|
5547 |
|
|
*/
|
5548 |
|
|
protected AccessibleAWTComponentHandler()
|
5549 |
|
|
{
|
5550 |
|
|
// Nothing to do here.
|
5551 |
|
|
}
|
5552 |
|
|
|
5553 |
|
|
/**
|
5554 |
|
|
* Convert a component hidden to a property change.
|
5555 |
|
|
*
|
5556 |
|
|
* @param e the event to convert
|
5557 |
|
|
*/
|
5558 |
|
|
public void componentHidden(ComponentEvent e)
|
5559 |
|
|
{
|
5560 |
|
|
AccessibleAWTComponent.this.firePropertyChange
|
5561 |
|
|
(ACCESSIBLE_STATE_PROPERTY, AccessibleState.VISIBLE, null);
|
5562 |
|
|
}
|
5563 |
|
|
|
5564 |
|
|
/**
|
5565 |
|
|
* Convert a component shown to a property change.
|
5566 |
|
|
*
|
5567 |
|
|
* @param e the event to convert
|
5568 |
|
|
*/
|
5569 |
|
|
public void componentShown(ComponentEvent e)
|
5570 |
|
|
{
|
5571 |
|
|
AccessibleAWTComponent.this.firePropertyChange
|
5572 |
|
|
(ACCESSIBLE_STATE_PROPERTY, null, AccessibleState.VISIBLE);
|
5573 |
|
|
}
|
5574 |
|
|
|
5575 |
|
|
/**
|
5576 |
|
|
* Moving a component does not affect properties.
|
5577 |
|
|
*
|
5578 |
|
|
* @param e ignored
|
5579 |
|
|
*/
|
5580 |
|
|
public void componentMoved(ComponentEvent e)
|
5581 |
|
|
{
|
5582 |
|
|
// Nothing to do here.
|
5583 |
|
|
}
|
5584 |
|
|
|
5585 |
|
|
/**
|
5586 |
|
|
* Resizing a component does not affect properties.
|
5587 |
|
|
*
|
5588 |
|
|
* @param e ignored
|
5589 |
|
|
*/
|
5590 |
|
|
public void componentResized(ComponentEvent e)
|
5591 |
|
|
{
|
5592 |
|
|
// Nothing to do here.
|
5593 |
|
|
}
|
5594 |
|
|
} // class AccessibleAWTComponentHandler
|
5595 |
|
|
|
5596 |
|
|
/**
|
5597 |
|
|
* Converts focus changes into property changes.
|
5598 |
|
|
*
|
5599 |
|
|
* @author Eric Blake (ebb9@email.byu.edu)
|
5600 |
|
|
* @since 1.3
|
5601 |
|
|
* @status updated to 1.4
|
5602 |
|
|
*/
|
5603 |
|
|
protected class AccessibleAWTFocusHandler implements FocusListener
|
5604 |
|
|
{
|
5605 |
|
|
/**
|
5606 |
|
|
* Default constructor.
|
5607 |
|
|
*/
|
5608 |
|
|
protected AccessibleAWTFocusHandler()
|
5609 |
|
|
{
|
5610 |
|
|
// Nothing to do here.
|
5611 |
|
|
}
|
5612 |
|
|
|
5613 |
|
|
/**
|
5614 |
|
|
* Convert a focus gained to a property change.
|
5615 |
|
|
*
|
5616 |
|
|
* @param e the event to convert
|
5617 |
|
|
*/
|
5618 |
|
|
public void focusGained(FocusEvent e)
|
5619 |
|
|
{
|
5620 |
|
|
AccessibleAWTComponent.this.firePropertyChange
|
5621 |
|
|
(ACCESSIBLE_STATE_PROPERTY, null, AccessibleState.FOCUSED);
|
5622 |
|
|
}
|
5623 |
|
|
|
5624 |
|
|
/**
|
5625 |
|
|
* Convert a focus lost to a property change.
|
5626 |
|
|
*
|
5627 |
|
|
* @param e the event to convert
|
5628 |
|
|
*/
|
5629 |
|
|
public void focusLost(FocusEvent e)
|
5630 |
|
|
{
|
5631 |
|
|
AccessibleAWTComponent.this.firePropertyChange
|
5632 |
|
|
(ACCESSIBLE_STATE_PROPERTY, AccessibleState.FOCUSED, null);
|
5633 |
|
|
}
|
5634 |
|
|
} // class AccessibleAWTComponentHandler
|
5635 |
|
|
} // class AccessibleAWTComponent
|
5636 |
|
|
|
5637 |
|
|
/**
|
5638 |
|
|
* This class provides support for blitting offscreen surfaces to a
|
5639 |
|
|
* component.
|
5640 |
|
|
*
|
5641 |
|
|
* @see BufferStrategy
|
5642 |
|
|
*
|
5643 |
|
|
* @since 1.4
|
5644 |
|
|
*/
|
5645 |
|
|
protected class BltBufferStrategy extends BufferStrategy
|
5646 |
|
|
{
|
5647 |
|
|
/**
|
5648 |
|
|
* The capabilities of the image buffer.
|
5649 |
|
|
*/
|
5650 |
|
|
protected BufferCapabilities caps;
|
5651 |
|
|
|
5652 |
|
|
/**
|
5653 |
|
|
* The back buffers used in this strategy.
|
5654 |
|
|
*/
|
5655 |
|
|
protected VolatileImage[] backBuffers;
|
5656 |
|
|
|
5657 |
|
|
/**
|
5658 |
|
|
* Whether or not the image buffer resources are allocated and
|
5659 |
|
|
* ready to be drawn into.
|
5660 |
|
|
*/
|
5661 |
|
|
protected boolean validatedContents;
|
5662 |
|
|
|
5663 |
|
|
/**
|
5664 |
|
|
* The width of the back buffers.
|
5665 |
|
|
*/
|
5666 |
|
|
protected int width;
|
5667 |
|
|
|
5668 |
|
|
/**
|
5669 |
|
|
* The height of the back buffers.
|
5670 |
|
|
*/
|
5671 |
|
|
protected int height;
|
5672 |
|
|
|
5673 |
|
|
/**
|
5674 |
|
|
* The front buffer.
|
5675 |
|
|
*/
|
5676 |
|
|
private VolatileImage frontBuffer;
|
5677 |
|
|
|
5678 |
|
|
/**
|
5679 |
|
|
* Creates a blitting buffer strategy.
|
5680 |
|
|
*
|
5681 |
|
|
* @param numBuffers the number of buffers, including the front
|
5682 |
|
|
* buffer
|
5683 |
|
|
* @param caps the capabilities of this strategy
|
5684 |
|
|
*/
|
5685 |
|
|
protected BltBufferStrategy(int numBuffers, BufferCapabilities caps)
|
5686 |
|
|
{
|
5687 |
|
|
this.caps = caps;
|
5688 |
|
|
createBackBuffers(numBuffers - 1);
|
5689 |
|
|
width = getWidth();
|
5690 |
|
|
height = getHeight();
|
5691 |
|
|
}
|
5692 |
|
|
|
5693 |
|
|
/**
|
5694 |
|
|
* Initializes the backBuffers field with an array of numBuffers
|
5695 |
|
|
* VolatileImages.
|
5696 |
|
|
*
|
5697 |
|
|
* @param numBuffers the number of backbuffers to create
|
5698 |
|
|
*/
|
5699 |
|
|
protected void createBackBuffers(int numBuffers)
|
5700 |
|
|
{
|
5701 |
|
|
GraphicsConfiguration c =
|
5702 |
|
|
GraphicsEnvironment.getLocalGraphicsEnvironment()
|
5703 |
|
|
.getDefaultScreenDevice().getDefaultConfiguration();
|
5704 |
|
|
|
5705 |
|
|
backBuffers = new VolatileImage[numBuffers];
|
5706 |
|
|
|
5707 |
|
|
for (int i = 0; i < numBuffers; i++)
|
5708 |
|
|
backBuffers[i] = c.createCompatibleVolatileImage(width, height);
|
5709 |
|
|
}
|
5710 |
|
|
|
5711 |
|
|
/**
|
5712 |
|
|
* Retrieves the capabilities of this buffer strategy.
|
5713 |
|
|
*
|
5714 |
|
|
* @return the capabilities of this buffer strategy
|
5715 |
|
|
*/
|
5716 |
|
|
public BufferCapabilities getCapabilities()
|
5717 |
|
|
{
|
5718 |
|
|
return caps;
|
5719 |
|
|
}
|
5720 |
|
|
|
5721 |
|
|
/**
|
5722 |
|
|
* Retrieves a graphics object that can be used to draw into this
|
5723 |
|
|
* strategy's image buffer.
|
5724 |
|
|
*
|
5725 |
|
|
* @return a graphics object
|
5726 |
|
|
*/
|
5727 |
|
|
public Graphics getDrawGraphics()
|
5728 |
|
|
{
|
5729 |
|
|
// Return the backmost buffer's graphics.
|
5730 |
|
|
return backBuffers[0].getGraphics();
|
5731 |
|
|
}
|
5732 |
|
|
|
5733 |
|
|
/**
|
5734 |
|
|
* Bring the contents of the back buffer to the front buffer.
|
5735 |
|
|
*/
|
5736 |
|
|
public void show()
|
5737 |
|
|
{
|
5738 |
|
|
GraphicsConfiguration c =
|
5739 |
|
|
GraphicsEnvironment.getLocalGraphicsEnvironment()
|
5740 |
|
|
.getDefaultScreenDevice().getDefaultConfiguration();
|
5741 |
|
|
|
5742 |
|
|
// draw the front buffer.
|
5743 |
|
|
getGraphics().drawImage(backBuffers[backBuffers.length - 1],
|
5744 |
|
|
width, height, null);
|
5745 |
|
|
|
5746 |
|
|
BufferCapabilities.FlipContents f = getCapabilities().getFlipContents();
|
5747 |
|
|
|
5748 |
|
|
// blit the back buffers.
|
5749 |
|
|
for (int i = backBuffers.length - 1; i > 0 ; i--)
|
5750 |
|
|
backBuffers[i] = backBuffers[i - 1];
|
5751 |
|
|
|
5752 |
|
|
// create new backmost buffer.
|
5753 |
|
|
if (f == BufferCapabilities.FlipContents.UNDEFINED)
|
5754 |
|
|
backBuffers[0] = c.createCompatibleVolatileImage(width, height);
|
5755 |
|
|
|
5756 |
|
|
// create new backmost buffer and clear it to the background
|
5757 |
|
|
// color.
|
5758 |
|
|
if (f == BufferCapabilities.FlipContents.BACKGROUND)
|
5759 |
|
|
{
|
5760 |
|
|
backBuffers[0] = c.createCompatibleVolatileImage(width, height);
|
5761 |
|
|
backBuffers[0].getGraphics().clearRect(0, 0, width, height);
|
5762 |
|
|
}
|
5763 |
|
|
|
5764 |
|
|
// FIXME: set the backmost buffer to the prior contents of the
|
5765 |
|
|
// front buffer. How do we retrieve the contents of the front
|
5766 |
|
|
// buffer?
|
5767 |
|
|
//
|
5768 |
|
|
// if (f == BufferCapabilities.FlipContents.PRIOR)
|
5769 |
|
|
|
5770 |
|
|
// set the backmost buffer to a copy of the new front buffer.
|
5771 |
|
|
if (f == BufferCapabilities.FlipContents.COPIED)
|
5772 |
|
|
backBuffers[0] = backBuffers[backBuffers.length - 1];
|
5773 |
|
|
}
|
5774 |
|
|
|
5775 |
|
|
/**
|
5776 |
|
|
* Re-create the image buffer resources if they've been lost.
|
5777 |
|
|
*/
|
5778 |
|
|
protected void revalidate()
|
5779 |
|
|
{
|
5780 |
|
|
GraphicsConfiguration c =
|
5781 |
|
|
GraphicsEnvironment.getLocalGraphicsEnvironment()
|
5782 |
|
|
.getDefaultScreenDevice().getDefaultConfiguration();
|
5783 |
|
|
|
5784 |
|
|
for (int i = 0; i < backBuffers.length; i++)
|
5785 |
|
|
{
|
5786 |
|
|
int result = backBuffers[i].validate(c);
|
5787 |
|
|
if (result == VolatileImage.IMAGE_INCOMPATIBLE)
|
5788 |
|
|
backBuffers[i] = c.createCompatibleVolatileImage(width, height);
|
5789 |
|
|
}
|
5790 |
|
|
validatedContents = true;
|
5791 |
|
|
}
|
5792 |
|
|
|
5793 |
|
|
/**
|
5794 |
|
|
* Returns whether or not the image buffer resources have been
|
5795 |
|
|
* lost.
|
5796 |
|
|
*
|
5797 |
|
|
* @return true if the resources have been lost, false otherwise
|
5798 |
|
|
*/
|
5799 |
|
|
public boolean contentsLost()
|
5800 |
|
|
{
|
5801 |
|
|
for (int i = 0; i < backBuffers.length; i++)
|
5802 |
|
|
{
|
5803 |
|
|
if (backBuffers[i].contentsLost())
|
5804 |
|
|
{
|
5805 |
|
|
validatedContents = false;
|
5806 |
|
|
return true;
|
5807 |
|
|
}
|
5808 |
|
|
}
|
5809 |
|
|
// we know that the buffer resources are valid now because we
|
5810 |
|
|
// just checked them
|
5811 |
|
|
validatedContents = true;
|
5812 |
|
|
return false;
|
5813 |
|
|
}
|
5814 |
|
|
|
5815 |
|
|
/**
|
5816 |
|
|
* Returns whether or not the image buffer resources have been
|
5817 |
|
|
* restored.
|
5818 |
|
|
*
|
5819 |
|
|
* @return true if the resources have been restored, false
|
5820 |
|
|
* otherwise
|
5821 |
|
|
*/
|
5822 |
|
|
public boolean contentsRestored()
|
5823 |
|
|
{
|
5824 |
|
|
GraphicsConfiguration c =
|
5825 |
|
|
GraphicsEnvironment.getLocalGraphicsEnvironment()
|
5826 |
|
|
.getDefaultScreenDevice().getDefaultConfiguration();
|
5827 |
|
|
|
5828 |
|
|
boolean imageRestored = false;
|
5829 |
|
|
|
5830 |
|
|
for (int i = 0; i < backBuffers.length; i++)
|
5831 |
|
|
{
|
5832 |
|
|
int result = backBuffers[i].validate(c);
|
5833 |
|
|
if (result == VolatileImage.IMAGE_RESTORED)
|
5834 |
|
|
imageRestored = true;
|
5835 |
|
|
else if (result == VolatileImage.IMAGE_INCOMPATIBLE)
|
5836 |
|
|
return false;
|
5837 |
|
|
}
|
5838 |
|
|
// we know that the buffer resources are valid now because we
|
5839 |
|
|
// just checked them
|
5840 |
|
|
validatedContents = true;
|
5841 |
|
|
return imageRestored;
|
5842 |
|
|
}
|
5843 |
|
|
}
|
5844 |
|
|
|
5845 |
|
|
/**
|
5846 |
|
|
* This class provides support for flipping component buffers. It
|
5847 |
|
|
* can only be used on Canvases and Windows.
|
5848 |
|
|
*
|
5849 |
|
|
* @since 1.4
|
5850 |
|
|
*/
|
5851 |
|
|
protected class FlipBufferStrategy extends BufferStrategy
|
5852 |
|
|
{
|
5853 |
|
|
/**
|
5854 |
|
|
* The number of buffers.
|
5855 |
|
|
*/
|
5856 |
|
|
protected int numBuffers;
|
5857 |
|
|
|
5858 |
|
|
/**
|
5859 |
|
|
* The capabilities of this buffering strategy.
|
5860 |
|
|
*/
|
5861 |
|
|
protected BufferCapabilities caps;
|
5862 |
|
|
|
5863 |
|
|
/**
|
5864 |
|
|
* An Image reference to the drawing buffer.
|
5865 |
|
|
*/
|
5866 |
|
|
protected Image drawBuffer;
|
5867 |
|
|
|
5868 |
|
|
/**
|
5869 |
|
|
* A VolatileImage reference to the drawing buffer.
|
5870 |
|
|
*/
|
5871 |
|
|
protected VolatileImage drawVBuffer;
|
5872 |
|
|
|
5873 |
|
|
/**
|
5874 |
|
|
* Whether or not the image buffer resources are allocated and
|
5875 |
|
|
* ready to be drawn into.
|
5876 |
|
|
*/
|
5877 |
|
|
protected boolean validatedContents;
|
5878 |
|
|
|
5879 |
|
|
/**
|
5880 |
|
|
* The width of the back buffer.
|
5881 |
|
|
*/
|
5882 |
|
|
private int width;
|
5883 |
|
|
|
5884 |
|
|
/**
|
5885 |
|
|
* The height of the back buffer.
|
5886 |
|
|
*/
|
5887 |
|
|
private int height;
|
5888 |
|
|
|
5889 |
|
|
/**
|
5890 |
|
|
* Creates a flipping buffer strategy. The only supported
|
5891 |
|
|
* strategy for FlipBufferStrategy itself is a double-buffer page
|
5892 |
|
|
* flipping strategy. It forms the basis for more complex derived
|
5893 |
|
|
* strategies.
|
5894 |
|
|
*
|
5895 |
|
|
* @param numBuffers the number of buffers
|
5896 |
|
|
* @param caps the capabilities of this buffering strategy
|
5897 |
|
|
*
|
5898 |
|
|
* @throws AWTException if the requested
|
5899 |
|
|
* number-of-buffers/capabilities combination is not supported
|
5900 |
|
|
*/
|
5901 |
|
|
protected FlipBufferStrategy(int numBuffers, BufferCapabilities caps)
|
5902 |
|
|
throws AWTException
|
5903 |
|
|
{
|
5904 |
|
|
this.caps = caps;
|
5905 |
|
|
width = getWidth();
|
5906 |
|
|
height = getHeight();
|
5907 |
|
|
|
5908 |
|
|
if (numBuffers > 1)
|
5909 |
|
|
createBuffers(numBuffers, caps);
|
5910 |
|
|
else
|
5911 |
|
|
{
|
5912 |
|
|
drawVBuffer = peer.createVolatileImage(width, height);
|
5913 |
|
|
drawBuffer = drawVBuffer;
|
5914 |
|
|
}
|
5915 |
|
|
}
|
5916 |
|
|
|
5917 |
|
|
/**
|
5918 |
|
|
* Creates a multi-buffer flipping strategy. The number of
|
5919 |
|
|
* buffers must be greater than one and the buffer capabilities
|
5920 |
|
|
* must specify page flipping.
|
5921 |
|
|
*
|
5922 |
|
|
* @param numBuffers the number of flipping buffers; must be
|
5923 |
|
|
* greater than one
|
5924 |
|
|
* @param caps the buffering capabilities; caps.isPageFlipping()
|
5925 |
|
|
* must return true
|
5926 |
|
|
*
|
5927 |
|
|
* @throws IllegalArgumentException if numBuffers is not greater
|
5928 |
|
|
* than one or if the page flipping capability is not requested
|
5929 |
|
|
*
|
5930 |
|
|
* @throws AWTException if the requested flipping strategy is not
|
5931 |
|
|
* supported
|
5932 |
|
|
*/
|
5933 |
|
|
protected void createBuffers(int numBuffers, BufferCapabilities caps)
|
5934 |
|
|
throws AWTException
|
5935 |
|
|
{
|
5936 |
|
|
if (numBuffers <= 1)
|
5937 |
|
|
throw new IllegalArgumentException("FlipBufferStrategy.createBuffers:"
|
5938 |
|
|
+ " numBuffers must be greater than"
|
5939 |
|
|
+ " one.");
|
5940 |
|
|
|
5941 |
|
|
if (!caps.isPageFlipping())
|
5942 |
|
|
throw new IllegalArgumentException("FlipBufferStrategy.createBuffers:"
|
5943 |
|
|
+ " flipping must be a specified"
|
5944 |
|
|
+ " capability.");
|
5945 |
|
|
|
5946 |
|
|
peer.createBuffers(numBuffers, caps);
|
5947 |
|
|
}
|
5948 |
|
|
|
5949 |
|
|
/**
|
5950 |
|
|
* Return a direct reference to the back buffer image.
|
5951 |
|
|
*
|
5952 |
|
|
* @return a direct reference to the back buffer image.
|
5953 |
|
|
*/
|
5954 |
|
|
protected Image getBackBuffer()
|
5955 |
|
|
{
|
5956 |
|
|
return peer.getBackBuffer();
|
5957 |
|
|
}
|
5958 |
|
|
|
5959 |
|
|
/**
|
5960 |
|
|
* Perform a flip operation to transfer the contents of the back
|
5961 |
|
|
* buffer to the front buffer.
|
5962 |
|
|
*/
|
5963 |
|
|
protected void flip(BufferCapabilities.FlipContents flipAction)
|
5964 |
|
|
{
|
5965 |
|
|
peer.flip(flipAction);
|
5966 |
|
|
}
|
5967 |
|
|
|
5968 |
|
|
/**
|
5969 |
|
|
* Release the back buffer's resources.
|
5970 |
|
|
*/
|
5971 |
|
|
protected void destroyBuffers()
|
5972 |
|
|
{
|
5973 |
|
|
peer.destroyBuffers();
|
5974 |
|
|
}
|
5975 |
|
|
|
5976 |
|
|
/**
|
5977 |
|
|
* Retrieves the capabilities of this buffer strategy.
|
5978 |
|
|
*
|
5979 |
|
|
* @return the capabilities of this buffer strategy
|
5980 |
|
|
*/
|
5981 |
|
|
public BufferCapabilities getCapabilities()
|
5982 |
|
|
{
|
5983 |
|
|
return caps;
|
5984 |
|
|
}
|
5985 |
|
|
|
5986 |
|
|
/**
|
5987 |
|
|
* Retrieves a graphics object that can be used to draw into this
|
5988 |
|
|
* strategy's image buffer.
|
5989 |
|
|
*
|
5990 |
|
|
* @return a graphics object
|
5991 |
|
|
*/
|
5992 |
|
|
public Graphics getDrawGraphics()
|
5993 |
|
|
{
|
5994 |
|
|
return drawVBuffer.getGraphics();
|
5995 |
|
|
}
|
5996 |
|
|
|
5997 |
|
|
/**
|
5998 |
|
|
* Re-create the image buffer resources if they've been lost.
|
5999 |
|
|
*/
|
6000 |
|
|
protected void revalidate()
|
6001 |
|
|
{
|
6002 |
|
|
GraphicsConfiguration c =
|
6003 |
|
|
GraphicsEnvironment.getLocalGraphicsEnvironment()
|
6004 |
|
|
.getDefaultScreenDevice().getDefaultConfiguration();
|
6005 |
|
|
|
6006 |
|
|
if (drawVBuffer.validate(c) == VolatileImage.IMAGE_INCOMPATIBLE)
|
6007 |
|
|
drawVBuffer = peer.createVolatileImage(width, height);
|
6008 |
|
|
validatedContents = true;
|
6009 |
|
|
}
|
6010 |
|
|
|
6011 |
|
|
/**
|
6012 |
|
|
* Returns whether or not the image buffer resources have been
|
6013 |
|
|
* lost.
|
6014 |
|
|
*
|
6015 |
|
|
* @return true if the resources have been lost, false otherwise
|
6016 |
|
|
*/
|
6017 |
|
|
public boolean contentsLost()
|
6018 |
|
|
{
|
6019 |
|
|
if (drawVBuffer.contentsLost())
|
6020 |
|
|
{
|
6021 |
|
|
validatedContents = false;
|
6022 |
|
|
return true;
|
6023 |
|
|
}
|
6024 |
|
|
// we know that the buffer resources are valid now because we
|
6025 |
|
|
// just checked them
|
6026 |
|
|
validatedContents = true;
|
6027 |
|
|
return false;
|
6028 |
|
|
}
|
6029 |
|
|
|
6030 |
|
|
/**
|
6031 |
|
|
* Returns whether or not the image buffer resources have been
|
6032 |
|
|
* restored.
|
6033 |
|
|
*
|
6034 |
|
|
* @return true if the resources have been restored, false
|
6035 |
|
|
* otherwise
|
6036 |
|
|
*/
|
6037 |
|
|
public boolean contentsRestored()
|
6038 |
|
|
{
|
6039 |
|
|
GraphicsConfiguration c =
|
6040 |
|
|
GraphicsEnvironment.getLocalGraphicsEnvironment()
|
6041 |
|
|
.getDefaultScreenDevice().getDefaultConfiguration();
|
6042 |
|
|
|
6043 |
|
|
int result = drawVBuffer.validate(c);
|
6044 |
|
|
|
6045 |
|
|
boolean imageRestored = false;
|
6046 |
|
|
|
6047 |
|
|
if (result == VolatileImage.IMAGE_RESTORED)
|
6048 |
|
|
imageRestored = true;
|
6049 |
|
|
else if (result == VolatileImage.IMAGE_INCOMPATIBLE)
|
6050 |
|
|
return false;
|
6051 |
|
|
|
6052 |
|
|
// we know that the buffer resources are valid now because we
|
6053 |
|
|
// just checked them
|
6054 |
|
|
validatedContents = true;
|
6055 |
|
|
return imageRestored;
|
6056 |
|
|
}
|
6057 |
|
|
|
6058 |
|
|
/**
|
6059 |
|
|
* Bring the contents of the back buffer to the front buffer.
|
6060 |
|
|
*/
|
6061 |
|
|
public void show()
|
6062 |
|
|
{
|
6063 |
|
|
flip(caps.getFlipContents());
|
6064 |
|
|
}
|
6065 |
|
|
}
|
6066 |
|
|
}
|